David Butler

David Butler

This is the "How Far Away Is It" video book channel.

It is a video book of Hubble and other Space and ground based Telescope pictures together with an illustrated explanation of how we know how far away these objects are - from your back yard to the most distant galaxies.

See how:
Triangulation can take us across the globe
Parallax can take us across the solar system
Standard candles can take us across the Milky Way
Red-shift can take us across the universe.

The video book contains three chapters: The Solar System; The Milky Way; and Galaxies.

A Distance Ladder foundation is built in segments 2 (The Earth) through 6 (Distant Stars).

The amazing celestial object photography begins with segment 7 ( Planetary Nebula). Many viewers may want to start there. Students, new to Astronomy, should start from the beginning.

There is also a preface and a segment on credits with websites identified that can be used for further research by interested viewers.

Classroom Aid - Arp 220

Classroom Aid - Arp 220

Classroom Aid - NGC 1333

Classroom Aid - NGC 1333

Classroom Aid - LAWD 37

Classroom Aid - LAWD 37

Пікірлер

  • @kalemafrank6828
    @kalemafrank6828Күн бұрын

    The best part is his special voice the rest is beyond my comprehension ❤

  • @Anny-me9ny
    @Anny-me9ny2 күн бұрын

    This video is extremely fascinating, but his narration is boring me to tears. It’s not an obituary, it’s the universe! 💀

  • @kathrin-mariasamarrastehle6538
    @kathrin-mariasamarrastehle65382 күн бұрын

  • @vasile.effect
    @vasile.effect3 күн бұрын

    This experiment has been completelly disproved by the Vasile effect, the effect of wavelength increasing or decreasing from refraction, as it relied on a helium bag in order to produce the shift in wavelength of the gammaray, which caused it to refract into air -where the detector and metal target were placed, thus causing a change in its speed and wavelength. This effect has been mathematically proved and immediatelly results from the equations f=v/lambda and v=c/n, where n is the index of refraction of the medium. Because the frequency f remains constant during refraction, an increase in the speed v of the gammaray will automatically cause its wavelength lambda to increase, which is a refractional redshift. Given that this phenomenon was not known at the time, it was completelly ignored by the Harvard scientists Pound and Rebka, who did not take into consideration the effects of refraction on the gammaray, and confused the refractional redshift from helium with a gravitational redshift.

  • @rebecca8308
    @rebecca83083 күн бұрын

  • @x86-64
    @x86-643 күн бұрын

    Mr. Butler, i am so sad i have come across your channel so late, but so glad I came across it nevertheless. I relate heavily to your story - I am a recent computer science grad trying to get my foot into the software engineering field, with a love for cosmology. I look up to you. I hope to be just like you

  • @kathrin-mariasamarrastehle6538
    @kathrin-mariasamarrastehle65385 күн бұрын

  • @IMN602
    @IMN6025 күн бұрын

    Hes the bob ross of particle physics

  • @ltgrt7606
    @ltgrt76065 күн бұрын

    Blakeoles are the worst nightmarish fantasies ever imagined

  • @philippemuller3079
    @philippemuller30795 күн бұрын

    I love your videos. You are an amazing educator. Thank you from the bottom of my heart.

  • @Didyoureallythinkaboutit
    @Didyoureallythinkaboutit6 күн бұрын

    David, where are you? I miss you and your wonderful words. Keep in touch

  • @blairribeca5858
    @blairribeca58586 күн бұрын

    NGC 7603 may very well bring about a "Paradigm Shift" someday. As they say,"Anomalies make man think,thinking makes man wise,and wisdom makes life endurable."

  • @marbasfpv4639
    @marbasfpv46397 күн бұрын

    Sometimes I watch this series while doing astrophotography. Usually while in the process of live stacking. Together they give a great sense of wander.

  • @ENUDIOZAYAS
    @ENUDIOZAYAS7 күн бұрын

    the man to watch with all the respect

  • @ytc257
    @ytc2578 күн бұрын

    Do you know Jesus is a messenger of God

  • @IamSkyeOrion
    @IamSkyeOrion8 күн бұрын

    I fell into a black hole of deep sleep. I love the subject matter, but these are the best videos I've found for inducing sleep 😮

  • @Jaggerbush
    @Jaggerbush9 күн бұрын

    2024 how well did predictions hold up?

  • @Jaggerbush
    @Jaggerbush9 күн бұрын

    Did voyager ever report that it made it to deep space and pass the bow shock?

  • @jonash5320
    @jonash532010 күн бұрын

    your microphone cuts off sound very notably when you finish a sentence. You may want to reconfigure that

  • @43nostromo
    @43nostromo10 күн бұрын

    23:44. Music by John Williams, The London Symphony Orchestra.

  • @gregmonks
    @gregmonks11 күн бұрын

    Not so fast, Ex-Lax. You're INFERRING distance using light-wave frequencies. As always, the flaw here is that you're not relying on the only thing that matters- direct observation.

  • @Daveyboy4
    @Daveyboy411 күн бұрын

    Dark energy id none visable photons, its the opposite peaks and valleys to q photon wave. Its the anti gravity effect that pushes the the boundaries of the universe. Maybe.

  • @jipangoo
    @jipangoo12 күн бұрын

    The sun is not yellow It is white

  • @Daveyboy4
    @Daveyboy413 күн бұрын

    A thought came to me, if a star collapsed to a neutron star how would qe be able to see it? How would a neutron star produce photons!? 🤔

  • @duggydo
    @duggydo13 күн бұрын

    You make some of the best videos on KZread. Thank you.

  • @iampuzzleman282
    @iampuzzleman28214 күн бұрын

    Please come back. Need to know about the environment issues affecting the planet. u told me some videos were gonna be worked on in this area

  • @43nostromo
    @43nostromo15 күн бұрын

    This is quite a clusterfuck.

  • @douglasperry8211
    @douglasperry821115 күн бұрын

    I don't know what this guy is talking about but he is the shit for insomnia! Best thing since Valium!

  • @Thunder_Dome45
    @Thunder_Dome4515 күн бұрын

    You showed a distance of 2.5 bly away. I have a few quasars in my image of the needle galaxy. If you have a red shift, how do you get that 2.5bly distance? It seems there's 5, maybe more based on expansion of the universe and hubble constant calculations. Find the website that you can look up the NED number for this Quasar. Toward the bottom of the page it lists things like light travel distance in gigalightyears. Is that the number quoted here? I have one quasar where the z aka red shift is 2.727. I'm so confused. That NED site lists other measurements like luminance distances. My image is 6 hours of exposure so these quasars show up pretty well but I can't understand their instant distance without involving expansion of the universe.

  • @damanthiara128
    @damanthiara12816 күн бұрын

    Can anyone tell me what's the background music?

  • @svens.5139
    @svens.51399 күн бұрын

    Borodin: String Quartet No. 2 in D Major: III. Notturno. Andante (Orch. Marriner) Take a look at the description.

  • @HE-pu3nt
    @HE-pu3nt16 күн бұрын

    I'm no Physicist. A thought experiment. The Earth travels around the sun in a circular motion, due to the Sun's gravity. If the Sun disappeared, the earth would continue in a straight line. My question is this. When the Sun disappeared would the Earth, 1.Travel in a circular motion for 8 minutes, and then start to travel in a straight line. Or, 2.Start to instantly travel in a straight line. Or, 3.Something else. I'd love to be educated by you smart folks.

  • @howfarawayisit
    @howfarawayisit16 күн бұрын

    The moment the sun's gravity is gone, the pull on the Earth is gone, so it won't be changing its direction.

  • @World_Vacations
    @World_Vacations17 күн бұрын

    The question is who we are.

  • @ButteLicher
    @ButteLicher17 күн бұрын

    great vid, thanks.

  • @sriharshagobburi
    @sriharshagobburi17 күн бұрын

    With all due respect sir, you are amazing I follow most of your videos they taught me a lot. I really can’t thank you enough for all your efforts you put into this, I am basically a huge fan of astronomy. But I don’t have time to read those books to learn, you are like my tutor 😊. I learned a lot from your videos, actually I am excited about discovering new planets by web, any updates on it.? And the video about milky way is my favorite ❤. You are awesome, thank you for enlightening me with all your videos. Thank you so much.

  • @eliotsalandybrown
    @eliotsalandybrown20 күн бұрын

    These videos are magical treats

  • @user-qy2wp8iz9l
    @user-qy2wp8iz9l20 күн бұрын

    I like the background music . Dr Butler

  • @DataJuggler
    @DataJuggler20 күн бұрын

    5:35 In the year 2137, we figure out our entire universe is the white spots on someone's fingernail in a larger universe.

  • @user-vd4zx4qh3x
    @user-vd4zx4qh3x20 күн бұрын

    Love you

  • @wilsonmontesdeoca5482
    @wilsonmontesdeoca548221 күн бұрын

    It's so hard to grasp ... thank you very much my friend

  • @user-qy2wp8iz9l
    @user-qy2wp8iz9l21 күн бұрын

    Mr. Butler , is there a thing called ( relativistic p parallax?

  • @howfarawayisit
    @howfarawayisit19 күн бұрын

    Yes. It uses general relativity equations to adjust the normal parallax computations. It's only important when we are talking about reaching accuracies around 1 micro-arcsecond on the sky.

  • @cedricspratley932
    @cedricspratley93221 күн бұрын

    It's so incredible to think that we're a product of the on-going chaos of an explosion in the multiverse that happened over 13 billion years ago. Just wrap that around your mind for a second. We're only composed of light, energy, and matter.

  • @stuboyd1194
    @stuboyd119421 күн бұрын

    If our sun was orbiting around a super massive black hole, I wonder what a simulation of the PoV would look like?

  • @boiledgermanfood
    @boiledgermanfood21 күн бұрын

    Sorry for your loss. This world is a better place for you and your son's presence in it, however brief

  • @iankelly8666
    @iankelly866622 күн бұрын

    Love how scientists take all the credit. These galaxies have not been conducted by the spitszer team…but by God

  • @Vijay_2424
    @Vijay_242422 күн бұрын

    Please post something new

  • @ksvinayakan
    @ksvinayakan22 күн бұрын

    very nice!! I hope all the NGC names get replaced by proper names though, because it is hard to remember by number, and if we go to name the stars etc, I am sure everybody in the world will have something named after themself.

  • @aracoixo3288
    @aracoixo328822 күн бұрын

    🩸

  • @aracoixo3288
    @aracoixo328822 күн бұрын

    🍄

  • @aracoixo3288
    @aracoixo328822 күн бұрын

    💯

  • @aracoixo3288
    @aracoixo328822 күн бұрын

    🤑