We Will Never Live in Space?

Ғылым және технология

Scientific American claims in a recent article that humans will NEVER live in space. I'm going to evaluate their concerns and explain why I think they are wrong. Lot's of good information in this one covering the amazing year we just had and the even better one we expect for 2024!
Special credit! Space.com
Shop the Academy store at...
shop.spreadshirt.com/terran-s...
Please help support our channel at...
/ terranspaceacademy
Thank you so much for watching!
Ad Astra Pro Terra
Artists
/ c_bass3d
/ labpadre
/ neopork85
/ hazegrayart
/ alexsvanart
/ _fragomatik_
/ nickhenning3d
/ rgvaerialphotos
Companies
/ nasa
/ spacex
www.cochranex.com
/ blueorigin
/ space_ryde
/ virgingalactic
/ relativityspace
/ neutronstarsys

Пікірлер: 281

  • @alt5494
    @alt54945 ай бұрын

    Every barrier humans have ever found has been broken. Only limitation is in our own minds.

  • @otpyrcralphpierre1742

    @otpyrcralphpierre1742

    5 ай бұрын

    And the Laws of Physics.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Both of you are exactly right! The man who believes he can and the one who believes he cannot are both right.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Pure nonsense, especially in the context of any discussion of science -- two relevant examples are the limitations of relativity and the laws of thermodynamics.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    @@terranspaceacademy No. Plenty of people believe it's possible to travel faster than light and plenty of people believe in perpetual motion machines -- they're all wrong.

  • @YellowRambler

    @YellowRambler

    5 ай бұрын

    Yep I was with you tell the last word “mind” I think the word should be stupidity. Programming is actually a game and your opponent is your your own stupidity that you play against.

  • @hallahgray3190
    @hallahgray31905 ай бұрын

    I agree with you. They are thinking way too small.👍🏽

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you Hallah!

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    Agreed. Spin gravity space stations with big atomic engines can do anything and go anywhere, we simply need to work out the details and no one in government is even talking about it.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    That is exactly right.

  • @IZ41X
    @IZ41X5 ай бұрын

    Another great video with a positive message, Thank you for all you do.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    You are most welcome and thank you!

  • @chammockutube
    @chammockutube5 ай бұрын

    Another excellent video!!!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you so much!

  • @GreyDeathVaccine
    @GreyDeathVaccine5 ай бұрын

    An inspiring episode. Thank you Professor & team 🙂

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    You are most welcome and thank you!

  • @salty_berserker_channel
    @salty_berserker_channel5 ай бұрын

    Best video youve made thus far, IMO.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Wow, thanks!

  • @gazwild438
    @gazwild4385 ай бұрын

    Fantastic video Lee 😊

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Glad you enjoyed it Lee! And thanks for watching.

  • @kenw8875
    @kenw88755 ай бұрын

    love these narrations. we hear Warren Miller. love it!

  • @salty_berserker_channel

    @salty_berserker_channel

    5 ай бұрын

    I hear warren miller too! 😂. I went to one of his movie releases in Long Beach CA in the 80s where warren narrated it live! Great memory, I was in high school.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you!

  • @chadjensenster
    @chadjensenster5 ай бұрын

    Great content as always

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you so much Chad!

  • @appliedfacts
    @appliedfacts5 ай бұрын

    Every proplem has a solution. We do have to put in time, effort and resources to solve them. I love how the video gives a generalized and realistic (in my view) solution to every problem posed to living in space and other celestial bodies. No, space is not easy BUT the benefits are SO worth the cost and it is so FUN!!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    We agree completely. It's only a matter of time, will, and resources.

  • @jamesowens7176
    @jamesowens71765 ай бұрын

    "Do you even Space, bro?" LOL But seriously, I love your positive vision of the future! Water-soaked foam suits sound like fun! Plus it might provide some fall protection as well. On the subject of reduced gravity, I am under the impression that we don't have enough data to know just what effect long-term reduced gravity would have. Humans haven't spent any appreciable time in partial gravity. Have you seen studies suggesting what fraction of normal Earth gravity is required to prevent most of the microgravity-related physiological issues?

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I think older adults will do fine with some medications that boost bone and muscle mass. (Not steroids, myostatin inhibitors etc)

  • @user-cy2on3gc3k
    @user-cy2on3gc3k5 ай бұрын

    Thank you so much for sharing!!!!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    You are so welcome!

  • @grahamdavid007
    @grahamdavid0075 ай бұрын

    wow - just wow - really appreciate your birds eye view - would be good for you to do a more detailed summary of your background or remind us with a link to vids you've done? thank you

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Born in Kansas and raised in rural (very rural) Arkansas with the original Star Trek as my guiding light. Joined the Marines out of high school and completed a bachelor's degree in computer science with a certificate in scientific engineering data processing (Fortran!). Was accepted in USAF Officer's Training School and served in the Strategic Air Command and later US Space Command as a Deputy ICBM Commander (Minuteman II) earning the rank of Captain. Accepted into medical school and upon graduation the US Medical Corps. Completed a master's degree in space science and a certificate in astrobiology :-) That's about it.

  • @eoachan9304
    @eoachan93045 ай бұрын

    Great article as always as far as technology and Space go :)

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you!!

  • @Sapien475
    @Sapien4755 ай бұрын

    I've often wondered what the construction possibilities would be with lunar or Martian regolith. Even in terms of using this regolith, I have only heard of proposals involving very high tech/complicated 3-D printing type use cases. Here on earth, our most used building material is concrete. If we could find processes for working regolith in somewhat primitive ways, this would be a major step for self-sustainability. Additionally, I wonder what could be done with tunneling- perhaps we could send some large tunneling equipment which could in turn help create an entire subterranean base.

  • @otpyrcralphpierre1742

    @otpyrcralphpierre1742

    5 ай бұрын

    Enter, the Boring Company.....

  • @Sapien475

    @Sapien475

    5 ай бұрын

    @@otpyrcralphpierre1742 Wouldn’t that be some crazy stroke of vertical integration.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    The easiest thing to do is 3D print stackable boxes with interlocks and add sand or water.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    From one side of a mountain to the other!

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    I wonder how expensive bringing a tunnel bore to the moon would be. They’re big and heavy, even the small ones. And don’t a lot of them need a constant and ample supply of water?

  • @matthewwiemken7293
    @matthewwiemken72935 ай бұрын

    We already do:)

  • @jameswilson5165

    @jameswilson5165

    5 ай бұрын

    Yep. Spaceship Earth.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Indeed!

  • @andysmith5940
    @andysmith59405 ай бұрын

    When you are considering the living area required by humans, you need to add an analysis of the space required to produce our food. Traditionally that requires much more space than just living space requirements. Fortunately, that could create some very functional parks.

  • @metalworker3

    @metalworker3

    5 ай бұрын

    Plus proportionally use to work and play. Maybe already included in the figure quoted.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I would love to see the entire top level filled with forests, gardens and flowers.

  • @oberonpanopticon
    @oberonpanopticon5 ай бұрын

    An aldrin cycler sounds like an ideal space cruise ship

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    It would be... Dr. Rendezvous is right again :-)

  • @rdbchase

    @rdbchase

    5 ай бұрын

    We should work towards building Mars cyclers before we contemplate sending people to Mars.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Before regular people at least. The Explorers and Founders won't wait for them.

  • @millennialfalcon1547
    @millennialfalcon15475 ай бұрын

    20 years from now, AI powered robotics could start leading the way for humans in space and on the moon, mars. From manufacturing to farming, building out and maintaining the infrastructure that humans will depend on with the need for food or oxygen and much less susceptible to radiation.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Five years if we work hard.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    That's it! Robots will colonize Mars.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    They should have already been on the Moon for decades!

  • @stuartnetherclift7566
    @stuartnetherclift75665 ай бұрын

    On the cost front the SpaceX Starlink system is meant to be the cash cow that will fund the dream - and it very much looks like it is starting to already...

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    It was a stroke of genius I think.

  • @stuartnetherclift7566

    @stuartnetherclift7566

    5 ай бұрын

    It is potentially what we have always hoped and dreamed for - an intelligent forward looking Space Program that is well funded with a visionary program and leader. Long may it continue!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Indeed. Nothing else has a chance.

  • @MrFranklitalien
    @MrFranklitalien5 ай бұрын

    glad you brought up convection heat loss on mars being overestimated by most people, a very common misconception

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    It's almost a Dewar out there :-)

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Whew! So the colonists won't have to worry about freezing to death?

  • @MrFranklitalien

    @MrFranklitalien

    5 ай бұрын

    I wholeheartedly recommend watching Sam Ross' presentation at the Mars Society on "Syrtis" the computational tool used to come to that understanding (I don't know if you-tube will let me paste a link sorry)@@rdbchase

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I'll look it up. Thank you!

  • @TheStraycat74
    @TheStraycat745 ай бұрын

    12:12 ordered the paperback version, because paper doesn't loose power

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you! Let me know what you think :-)

  • @zazugee
    @zazugee5 ай бұрын

    I'm from Algeria and i remember s a kid i had magazines about space exploration and technology and astronomy too. i was like drawing on y sketchbook about exploring the Jovian moons but when i became an adult i became disillusioned by the state of economy and the world politics. I recently followed SpaceX bc basically they started to revive the dream of reaching space to everyone.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    They have indeed... Nothing was going right before SpaceX revved it back up. Fingers crossed.

  • @ibnorml5506
    @ibnorml55065 ай бұрын

    Anyone who concludes that we will never live in space because we have problems that we cannot solve with today's technology needs to remember that 200 years ago man couldn't fly and thought one would die if we ever exceeded the speed of 60 miles per hour.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Exactly. There are so many technological advances that make it possible today.

  • @frankmcgowan9457
    @frankmcgowan94575 ай бұрын

    Why expend an entire SH/SS stack? Get some SRBs. Put two on the booster and 4 or 6 on the Starship. The two on the booster will lift the ones on the Starship and help Starship be further along when it first needs to use fuel. After stage separation, use the aimable Raptors plus 2 SRB to put the ship into orbit and use the last 2 (4 ?) SRB plus the center Raptors for control to send the thing to the moon. Once the SRBs are fully expended, Starship can fly the way SpaceX intended. It should arrive in lunar orbit with nearly full tanks. No refueling. Fully recoverable stack. The SRB details would be calculated by SpaceX. The individual thrust, burn duration, number and placement need to be established by them. Though you would probably want to fire them in pairs for symmetrical force application, the specs for engines used for different purposes need not be the same. Use the center three Raptors for direction control and fine tuning the thrust applied.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    That's a lot more work...

  • @frankmcgowan9457

    @frankmcgowan9457

    5 ай бұрын

    @@terranspaceacademy More work than what, exactly? The entire SpaceX service marketing strategy is based on the reduced prices they can offer IF they reuse the rocket. Expendable SRBs have got to be cheaper than throwing away SH/SS.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Brilliant! You're right up there with Elon. I vote to make you executive director of space colonization.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you! I love that title!

  • @clydecox2108
    @clydecox21085 ай бұрын

    A thousand likes from me for this one. Ad Astra per Tara.

  • @clydecox2108

    @clydecox2108

    5 ай бұрын

    Ad Astra pro Tara*

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    terra@@clydecox2108

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    Unless I missed something, who's Tara?

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thank you!

  • @chadjensenster

    @chadjensenster

    5 ай бұрын

    Ad Astra pro terra. Latin for "to the stars for (or from) the Earth"

  • @MrGunderfly
    @MrGunderfly5 ай бұрын

    i have a saying: "just say nay to nay-say". we have far too many naysayers in today's society. it's interesting to me how many of them seem to think of themselves as progressive. they want to "progress" only in very narrow directions and at a lowest common denominator pace. it is the generalism, adaptability, imagination, enthusiasm and indeed exceptionalism, that makes humans special. these are the reasons we are not already extinct. i find it ridiculous when people, even after seeing many examples to the contrary, double down and continue to claim that this or that will never happen. if we ever do go extinct, it will be because there are more of these kind of folk, than the other.

  • @olafnilsen1641

    @olafnilsen1641

    5 ай бұрын

    That is a sane and suitable response to the negative slant of the scientific American article

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Doing nothing is always more comfortable short term but no one remembers those who sat idly by while the future was made.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Over and over and over again, posters extol the power of positive thinking without reference to science -- do you all suppose that rockets are willed into space?

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Will alone could get us to space! William Hayward Pickering (24 December 1910 - 15 March 2004) was a New Zealand-born aerospace engineer who headed Pasadena, California's Jet Propulsion Laboratory (JPL) for 22 years, retiring in 1976. He was a senior NASA luminary and pioneered the exploration of space.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    @@terranspaceacademy You are not making much sense.

  • @TheDe1deonly
    @TheDe1deonly5 ай бұрын

    Good luck, Space Boys...😅!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Thanks! We'll wave from the Moon!

  • @jemussi7842
    @jemussi78425 ай бұрын

    Yes. They are thinking too small.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Time to dream big! :-)

  • @TK-dt2pg
    @TK-dt2pg5 ай бұрын

    Thanks for making this video. I was also really disappointed with the Scientific American article. It immediately reminded me of the saying: “If God had meant man to fly, he would have given him wings." My next thought was people will live in space if they want to. As you outlined, the problems are not insurmountable. I think we're on the cusp of something unimaginably great, and I hope we follow through.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    There are always those undaunted by pessimism :-)

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    Remember, there’s still about 2,999,890 years left until we invent heavier than air flying machines!

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    Those with vast money and power don't really want to share. If they can bumble along the current paradigm they will. I sadly don't share your optimism. Our only driving force for progress in space is that China will beat us there. China is going to leave us in the dust this decade because they want it more and those in charge here just want more (money).

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Many scientifically illiterate people are nonetheless interested in space exploration, but it's the power of science and technology that enables it, not the power of positive thinking.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    @@terranspaceacademy Yes -- just consider the achievements of all the quacks on KZread denying the laws of thermodynamic, e.g.

  • @andrewreynolds912
    @andrewreynolds91225 күн бұрын

    Saying never is never i think we will but will have to find ways to do it

  • @terranspaceacademy

    @terranspaceacademy

    25 күн бұрын

    I agree but those wways will be found :-)

  • @andrewreynolds912

    @andrewreynolds912

    25 күн бұрын

    @@terranspaceacademy I'm glad just like how will find a way to colonize mars they say it's not suitable or will never happen while not yet its not impossible plus their could be so much material under all those rocks we might not even know of that could be very valuable! Where stubborn beings people underestimate the power and stubbornness of human beings.

  • @andrewreynolds912

    @andrewreynolds912

    24 күн бұрын

    @@terranspaceacademy ok?

  • @henrychinaski3720
    @henrychinaski37205 ай бұрын

    First just want to say thanks for your great channel here - always learn so much, so clearly presented. I'm 64 years old and have always been interested in space and have always anticipated people living there. However, I have to say that lately I too have great doubts that humans will ever do more than go on brief "jaunts" to space & planets. Some reasons: - I don't believe that there will be any need to - the earth will be far less crowded going forward. Whenever & wherever females gain the ability to limit childbirth, they do (see almost any modern country). After watching a couple of births, I can't really blame them.🤣 - Most young people today - the ones who would do this colonizing - don't have much interest, don't "burn" to learn what's over the next hill or ocean, like previous generations. They are passive and content to just stay plugged into the internet (believe me, I know a lot of them: phone always in hand, watch on wrist, buds in ears - just wait til that Apple face-mask thingy gets perfected). Think "The Matrix." - With the rise of AI, why should humans risk going? In a few years AI will be so "human-like", so compact, so robust, so capable, that AI "robots" of some sort can just go and do all the exploring while we stay safe here on our home world. If they get "killed" so what? Just send more. Unmanned probes have been doing a great job for decades. Considering the above, its hard to imagine 200 lb. bags of meat, water, and bones, that are easily damaged, and need enormous resources to just stay alive off-earth, going very far. We'll go just to say hey we did it, but space is much more the place for machines than human bodies.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I would agree that the adventurous self sufficient spirit of our ancestors is less common but there will be enough out of eight billion to get things going.

  • @oberonpanopticon
    @oberonpanopticon5 ай бұрын

    I suggest the book “A city on mars” to anyone who’s overly optimistic. A lot of people don’t seem to realize just how incredibly hard living in space would be. We might have a small colony on mars within this century if we’re lucky, but there’s no way in hell that we’ll have a million people there by 2050 or whatever.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I could see ten thousand easy. A million is tough.

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@terranspaceacademy Ten thousand people living on mars by 2050? I certainly hope you don’t make any wagers on that.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    @@terranspaceacademy Right -- 10,000 people living holed up in a lava tube in an airless waste, conducting a space-age economy powered by positive thinking! Great opportunities for processing dust on Mars.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Love it! Sign me up!

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@terranspaceacademyGreat! That’ll be $5,600,000.

  • @ekojar3047
    @ekojar30475 ай бұрын

    But we already do! I know im not the first to say it but its true, just using my voice to add to the pile. The trick is making a portable earth that never needs batteries 🔋

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Indeed!

  • @scottthomas3792
    @scottthomas37925 ай бұрын

    Look at early aviation....a lot of parallels with space. We will live in space...how many " impossible" things have we already done?

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Indeed. Never believe someone who says the physically possible will never be done.

  • @BBBrasil
    @BBBrasil4 ай бұрын

    Moon will at first attract highly specialized workers from across all STEM. As industry develops, also upper tier academics. This dynamics will create a highly intelligent and developed society, moon will be easily the home for the most successful enterprises. Instead of hunting for asteroids, the moon has million of asteroid impacts, titanium, carbon, rare earth minerals, all you need to catapult humanity into the space era.

  • @terranspaceacademy

    @terranspaceacademy

    4 ай бұрын

    Then the military will throw an asteroid at us and yell NERDS!!!!

  • @GlennJTison
    @GlennJTison5 ай бұрын

    We already live in space, on a big rock. There are other rocks, many of which, large and small, might supply sufficient shielding. The passage in between requires speed, shielding mass, artificial gravity and a portable biom. But most of us will remain here, on earth 'till the Sun bakes the earth and the oceans boil. 18

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Third from the sun...

  • @Matthew.Sirrom
    @Matthew.Sirrom5 ай бұрын

    People are already effectively living in space on the ISS and tian gong space station .

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Sure they are; at fantastic expense, for no more than about a year at a time, with constant resupply, under draconian conditions few could tolerate -- this must mean that space colonization is not only feasible, but imminent!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    We need self sufficient full colonies on the Moon, Mars, Mercury and Titan to really get things going.

  • @zedrocky6529
    @zedrocky65295 ай бұрын

    Nothing to listen to here just facts!💯

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    We love the facts! :-)

  • @TheWadetube
    @TheWadetube5 ай бұрын

    Price is a big issue with NASA and Boeing because they all want to line their pockets. I believe a more efficient high pressure engine is around the corner that will atleast double the ISP efficiency of the Raptors. If that is possible then single stage to orbit will shave millions off of launches and the price per pound will possibly drop below 1,000 dollars. I cannot speculate much further but I believe it will happen and when it does it will be a game changer and we will not be thinking of sending people to Mars in a camper van, but a heavy cruiser space craft carrier design that will re-use space planes for space to planet side transport while it stays in orbit.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I'm sure improvements will come but it is not possible to double the Isp of the Raptors. Even with RDEs. There are limits to the chemical energy contained in the combustion process. Maybe 350/400 is possible with RDEs. Otherwise 335/385 is probably the limit and SpaceX is almost there now.

  • @TheWadetube

    @TheWadetube

    5 ай бұрын

    @@terranspaceacademy Nitromethane burns hotter than methane, at around 4350 F. An engine design that can triple the pressure, double the heat with a fuel that has 2.3 times more energy than gasoline with a given amount of oxygen will achieve a higher ISP , It is practical that an exhaust temperature of around 9,000 F is going to produce more thrust for a given amount of fuel. I believe the calculations for ISP in raptors is limited to either methane or kerosene and at normal operating pressures and temperatures. I also believe that gas at those temperatures may also ionize and be capable of being pushed along further by magnetic means. The hottest burning fuel tops out at 9,010 in oxygen and over 10,000 F in ozone.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Everyone in rocket science knows that the limits are the temperature the engines can withstand. Engines are limited by their meltdown temperature.

  • @TheWadetube

    @TheWadetube

    5 ай бұрын

    @@terranspaceacademy Exactly my point. There is an alloy that doesn't melt until over 7000 degrees F is surpassed and nobody is using it. It's hard to 3d print, you need a very powerful laser printer to handle those temperatures, or an electron beam printer. My design is small and can handle higher pressures, the metal can handle twice the temperature that inconel can handle and more with proper cooling. So when I say better rocket engines are just around the corner I don't mean NASA or Boeing, it's gotta be Space X

  • @rdbchase
    @rdbchase5 ай бұрын

    "We Will Never Live in Space? [sic]" -- If you meant to ask a question, that should be "Will We Never Live in Space?"; if you wanted to make an assertion, "We Will Never Live in Space."

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I had to go with the title of the article in SciAm and add the "?"

  • @takashitamagawa5881
    @takashitamagawa58815 ай бұрын

    I read the Scientific American article. While I don't automatically accept all of her conclusions I do think that Elon Musk has been unrealistic thinking that large Mars colonies are going to be built soon using SpaceX Starships. As stated in the video, the lift capacity of that huge vehicle would enable deep space missions were it to employ a high energy third stage, however I suspect that Musk doesn't want to get away from the idea of a reusable two stage vehicle with in-orbit refueling to accomplish such missions with massive payloads, even though the initial steps will likely need to be more modest. I suspect that humanity will have to get over its ethical hesitation and engage in modifying the human genome to engineer bodies that can live in places other than on Earth. Aside from the cost of relocating large numbers of people off of our home planet thee is another issue that will come up in the next century, and that is a likely population crash. For decades now we have gotten used to the idea that the Earth's population will increase indefinitely at an ever increasing rate. However the effect of people having ever smaller families is already profound in the developed world, as rich countries struggle with fertility rates falling below replacement level. It is only a matter of time before that becomes an issue worldwide. It is already profoundly affecting China, which mistakenly maintained a one child policy for families for too long. The falling population is likely to reduce the pressures to get off Earth as well as limit the human resources needed to accomplish the endeavor.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    He does seem to gloss over some of the big points but then so did Perry and Cook. Oh wait... What happened to those guys?

  • @TheWadetube
    @TheWadetube5 ай бұрын

    The author does not have confidence that improvements will be made to space ships or engines. AN aluminum can is a poor poor, bad idea for a radiation shield. 1/4 inch stainless steel with some water cooling and extra layers of steel is a much better idea. Two other methods are available, a weak magnetic field of large proportions is a good idea and also water in radiator to circulate around the inside of the cabins for cooling or warming will also block radiation as will polyethelene plastic with high hydrogen content.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Those are all valid points. I would not want to put a family on the ISS (especially after watching the new movie-yikes!)

  • @richardrogers156
    @richardrogers1565 ай бұрын

    I agree some will try and they will get their reward is what is in King James Bible.Hosea 14:1-9 would be a good idea.All the money could help many out.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I generally depend on more recent texts for space science advice. Back then they thought the sky was solid "the firmament" etc...

  • @YellowRambler
    @YellowRambler5 ай бұрын

    As the number of people that live in different levels of Gravity increase’s, so does the chance that one or more of those people will come up with the true understanding of what gravity actually is, when that happens it might be called Gravity era, and everything changes.

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    Many in the shiny hat community think they already know. Some say they used it to get Apollo off the moon.

  • @YellowRambler

    @YellowRambler

    5 ай бұрын

    @@markschroter2640 Considering that most scientific community pet theories don’t seem to go well with Gravity other than simple basic Gravity theory’s, the scientific community might have to deal with a nervous breakdown before heading back to the chalkboard to start over at the beginning.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Sure, gravity is just a state of mind -- foolish Newton!

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    @@YellowRambler I never really got past Newtonian physics and am ok with that. I played around with Einstein's math but then I found out about women. As I recall and it has been a very long time gravity didn't fit into that nearly as well as it should have.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    That was hypergolics... not antigravity :-)

  • @theayeguy5226
    @theayeguy52265 ай бұрын

    I'll add another danger: micrometeorites. It will be like a machine gun firing hypersonic bullets at random intervals from random directions at your space station... forever.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Which will be everyone's excuse for those big laser cannons.

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@terranspaceacademyWouldn’t many tiny laser cannons be more useful?

  • @GreyDeathVaccine

    @GreyDeathVaccine

    5 ай бұрын

    @@oberonpanopticon I think you missed the "excuse" part.

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@GreyDeathVaccine Fair enough

  • @actisenergy
    @actisenergy5 ай бұрын

    Well I disagree Biosphere 2 was a failed experiment, so sure results were far from ideal, even simple issues like concrete imbalances to oxygen levels tell us much. Interpersonal psychology also is quite important too.

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    It's a completely different scenario when you can look out the window and see home. When you are 7 months away and staring at (what do they call it?) the 7 minutes of hell, your perspective on making your habitat work changes.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Very true and in that regard we learned a lot. The concrete thing was a sad oversight on the part of the planners.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Studying closed environments on Earth would be how any rational person advocating space colonization would start -- note that we hear nothing about this out of Musk or his fanboys.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    @@markschroter2640 Do you suppose that if we loft enough people into space, they will figure out how to live in a vacuum in situ?

  • @markschroter2640

    @markschroter2640

    5 ай бұрын

    @@rdbchase Are you volunteering?

  • @nightlightabcd
    @nightlightabcd5 ай бұрын

    This seems to be a space add of dreams, while ignoring the reality of the effects of reduced gravity over time. I see you mentioned the issue but them jumped over it like most pro-moon and Mars habitation do! It is highly unlikely that there will ever be self sustaining cities on the moon or Mars! Their economy will be based on funding from earth for anything that can be extracted from the moon or Mars can be produced on earth cheaper, so there is no real self sustaining economy. Being able to extract ice and make water is not a economy, no mater what you make of it! Wouldn't it be more viable to have 1G rotating space stations orbiting the moon and Mars and shuttle back and forth to the surface? It would be expensive, but not much more then a big merry go round on the surface for gravity. If we are ever going to be space farriers, then we need the gravity of earth or Mars is the end! The main issue with a large rotating space station with of the gravity of earth, is cost, but also the coriolis effect, and only a large diameter can perhaps solve that! Either that or alter our physiology and do we really want that? As far as self sustaining cities, I question if it is even possible to conceive in no to reduced gravity, and if so, can a child develop properly and is it ethical to conceive, bear, birth and raise a child in such conditions? I doubt that a child born, if making it that far, could even develop in such conditions! Am I the only one questioning the ethics of conceiving a child in space?!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Artificial gravity compensate fully for that problem. Eight to twelve hour work periods of lower gravity with 1g the rest of the time will not hurt anyone and could be very beneficial.

  • @nightlightabcd

    @nightlightabcd

    5 ай бұрын

    @@terranspaceacademy - There are NO plans at all. There have been talk of small rotations for the gravity of the moon or Mars but not a single plan for a orbiting space station, or ship, with the gravity of earth, and won't be for another hundred years! "Eight to twelve hour work periods of lower gravity with 1g the rest of the time will not hurt anyone and could be very beneficial."!! You're kidding right?! A gain, there are no plans for a rotation space station, or ship, with the gravity of earth! Imagination and dreaming don't count! The only origination that even suggested and had planes was the Gateway Project and it's pretty much dead! That's it, there are no others! There are No planes, there are NONE in the works!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    I am not kidding. Astronauts have survived ZERO gravity exceedingly well for six months at a time. What makes you think partial gravity with 2/3 of the time in 1g would be worse? Ridiculous.

  • @nightlightabcd

    @nightlightabcd

    5 ай бұрын

    @@terranspaceacademy - Elon is talking of a self sustaining cities of a million people!! Fact is what is makes me know that reduced to no gravity will have adverse effects on the human body! And still there is the issue of human reproduction!!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    That is being researched by Spaceborn United.

  • @johnacott1238
    @johnacott12385 ай бұрын

    We do live in space...............only our spacecraft is Planet Earth!

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    But I want a new one! :-)

  • @michaeldeierhoi4096
    @michaeldeierhoi40965 ай бұрын

    People are already living in space on the ISS for up to a year at a time. How is that not living in space. It wiil take time, but as we begin mine asteroids and spend more time on in the moon then living in space will become more of a thing.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    True but I'm talking about permanent habitation as in living the rest of your life there.

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@terranspaceacademyI mean, a few people have ended up living the rest of their lives in space… technically.

  • @michaeldeierhoi4096

    @michaeldeierhoi4096

    5 ай бұрын

    @@terranspaceacademy It will happen, but probably not for decades. Of course predicting the future in these uncertain times is fraught with far too many variables that we can't even identify yet.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    "It's tough to make predictions, especially about the future." Yogi Berra

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@terranspaceacademy “Nothing ages like the future” - unknown

  • @captjack2112
    @captjack21125 ай бұрын

    Cheers and ty as always. Life on other planets ehhh 🤔🤔🤔🤔🤔🤔 step in the Boring Company 😉 yet another Elon business that keeps a very low profile for a company of his 🤔🤔😉😎. Life on other planets in a humble opinion will likely be underground cities to avoid many issues mentioned and easier access to water supply. We shall wait and see into the future 🤞🙏

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Indeed. I think Musk is trying to find ways to bankroll the basic research we'll need on Mars.

  • @oberonpanopticon
    @oberonpanopticon5 ай бұрын

    A big issue with large scale habitation on the moon is that you’d need to import colossal amounts of resources for life support, since the moon is rather barren when it comes to nitrogen and carbon (and it doesn’t have a fantastic supply of water either). No matter how good your space infrastructure is, it’s still going to be a massive undertaking to transport enough resources to sustain a hundred billion people (not to mention all the food you’d need to grow for them). We might do it eventually, hundreds of years from now, but I suspect that for a very long time the moon will have no more than a million people and be mostly automated industrial processes.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Those are seriously concerns but it wouldn't take that much to get started. Mars on the other hand is a lot farther away.

  • @oberonpanopticon

    @oberonpanopticon

    5 ай бұрын

    @@terranspaceacademy It might not take much to get started, but to continue growing the population you’d need a constant and growing supply of resources from earth. Even if you had space elevators on the earth and moon it’d still be a serious logistical conundrum. And then there’s the issue of growing food - even once you get enough resources to hypothetically sustain a hundred billion people up there, using said resources to actually keep them alive is a whole other can of worms. Since in this scenario the entire surface of the moon would be covered by a residential layer, you’d have to make several layers of farmland, and possibly some clusters of orbital farm complexes, which would require colossal amounts of resources no matter how efficient you were. And of course you’d need a constant supply of energy to do all that - you could cover the entire outer surface of the moon in solar panels but that probably wouldn’t be enough. You could try running millions of fusion reactors at once, but then you’d have the issue of managing any excess heat and keeping them all supplied with fusion fuel and exporting the waste products (minimal as they are, with a million reactors they’d build up fast)

  • @lucidmoses
    @lucidmoses5 ай бұрын

    Water in the suite may help for radiation but check the astronaut interviews regarding the zero bouncy tank. It's true the suit seams zero g, but the person in it feels the same 1 g. They just push against the suite the same why they would push against the ground. In your scenario, some of the spine, legs, feet would carry more weight but the entire rest of the body inside (blood, eyes, origins, etc) would still have no help and still have the same problems.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    That's true in the zero boyancy tank in Earth gravity. But on Mars the weight will be one third "normal". So I would need to weight the equivalent of 660lbs to feel the same there as I do here.

  • @lucidmoses

    @lucidmoses

    5 ай бұрын

    @@terranspaceacademy No matter how much weight you add to their back. that doesn't effect the eyes, blood, etc etc. Most the the body is still in 1/3 g even with the extra weight of the suit.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    That's true but compression garments can compensate everywhere but the old noggin. I guess we'll need to drill a pressure hole in the back of the skull and... hmmm... Maybe not.

  • @lucidmoses

    @lucidmoses

    5 ай бұрын

    @@terranspaceacademy If they are not coming back then I don't think any of the 1/3 g problems will matter. Use it or lose it doesn't normally kill you. Pressure may be a good substitute for the heart. Not sure it will help with any of the other log g problems.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Seriously it would be the perfect HIIT routine. High weight suit with eight hours work and sixteen hours low g recovery. We'll all look like the new Reacher!

  • @mouserr
    @mouserr4 ай бұрын

    i hope someone proposes and gets all the support it takes to create a universally accepted law backed by force as required to protect and preserve the earth facing side of the moon in its near pristine state, the damage done by rovers and the like thus far is invisible and will eventually be eroded away but there should be no cities on the face we can see from earth and it should be treated as a nature preserve with limited excursions to avoid spoiling the view from earth. if we pave over and pollute the earth facing side an important part of humanity will be forever lost.

  • @terranspaceacademy

    @terranspaceacademy

    4 ай бұрын

    Interesting! If I can have the far side and the poles the rest is the Mouser international lunar park!

  • @jackdbur

    @jackdbur

    10 күн бұрын

    He who gets there & claims it sets the rules😅

  • @leonardgibney2997
    @leonardgibney29975 ай бұрын

    I'm a sceptic about manned space flight. A species made of water largely is too puny for prolonged missions. It is evolved for life on Earth. Only.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Which is why it will be important to create Earth like conditions as move out into the solar system.

  • @robertobruselas3952
    @robertobruselas39525 ай бұрын

    Excellent video about surviving in space. I am convinced that the Space race fueled by the Chinese will bring the Space Economy to a new innovative level. Lucky for the Space enthusiasts that we live in Elon Musk’s visionary time(SpaceX-Starship🚀Starlink🛰️). Greetings from Europe BE.

  • @rdbchase

    @rdbchase

    5 ай бұрын

    Starship! It has so far exploded twice in two tries to get to orbit, so it will shortly be taking colonists to Mars.

  • @terranspaceacademy

    @terranspaceacademy

    5 ай бұрын

    Indeed. We are actually lucky for the competition.

Келесі