What is dark matter ? And what is it made of ?

Ғылым және технология

What is dark matter? And what is it made of?
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Пікірлер: 21

  • @shajanpradeep236
    @shajanpradeep2362 жыл бұрын

    Nicely explained ✨

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    Thank you so much.

  • @anuradharawat5220
    @anuradharawat52202 жыл бұрын

    Nice share

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    Thank you

  • @saicharathreddy1318
    @saicharathreddy13182 жыл бұрын

    this channel needs recognition great content loved it 😍😍

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    Thank you so much for your kind gesture. Btw we also have a Hindi if you would like to check out.

  • @saicharathreddy1318

    @saicharathreddy1318

    2 жыл бұрын

    @@thecosmologicalreality i would definitely check it out are u Indian??

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    @@saicharathreddy1318 well we are not single person we are a team. Our voice artist for English is British while rest of our team is Indian 😊

  • @valencia4058
    @valencia40582 жыл бұрын

    This channel has content as great as what if and in a nut shell channel Amazing editing feels as great as watching what if.

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    Thank you so much for your kind words. We'll keep learning and delivering such content. 😃

  • @valencia4058

    @valencia4058

    2 жыл бұрын

    @@thecosmologicalreality hopefully you will remember me when you get famous🏆

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    @@valencia4058 indeed, we do not forget early support. 😊 (You are quite famous yourself) 🤠

  • @michaelkahn8744
    @michaelkahn874411 ай бұрын

    Alternative Explanation of Dark Matter and Dark Energy - Newly proposed model of Universe can explain both of Dark Matter and Dark Energy Einstein’s theory of General Relativity states that spacetime is curved by the presence of mass. This curvature influences the motion other objects with mass and gives rise to gravitation. Thus, gravity is a result of geometric features in spacetime. However, we also observe gravitational effects - curvature of spacetime - in areas without any detectable mass. This has given rise to the concept of dark matter, which is matter that does not interact in any detectable way with normal matter, except through gravity. So, there is some large quantity of dark matter scattered throughout the universe, which curves spacetime and causes gravitational effects just like normal matter, but we cannot see or detect it with any known method. An alternative theory to the identity of dark matter is proposed - it is not matter at all, but rather an intrinsic curvature of spacetime. In other words, spacetime is not naturally flat. Even in the absence of matter, we observe some inherent curvature of spacetime. So, the question is now - why is spacetime naturally curved? Why is it not flat in the absence of mass? The universe is 4-dimensional, with 3 spatial dimensions and one dimension in time. Rather than consider time as a linear dimension, we can consider it as a radial one. Therefore, rather than describing the universe with a Cartesian coordinate system, we describe it with a 4-dimensional spherical coordinate system - 3 angular coordinates, φ1, φ2, φ3, and one radial coordinate in time, t. We live on the 3-dimensional surface of a 4-dimensional bubble which is expanding radially in time. Thus, the Big Bang represents t=0, the beginning of time. The crucial point is that the expansion of the universe is not homogeneous in all directions. The expansion rate at one point on the bubble’s surface may differ slightly from another point near it. The universe is only roughly spherical in 4 dimensions, the same way that the Earth is only roughly spherical in 3 dimensions. The same way we observe local mountains and valleys on the surface of Earth, we observe local “mountains” and “valleys” on the surface of the universe bubble. The inhomogeneity of the expansion of the universe has given rise to natural curvature of spacetime. This natural curvature causes the phenomenon of “dark matter”. “Valleys” in spacetime pull matter in, similarly to the warping of spacetime of massive objects. So “dark matter” is really “valleys” in spacetime that are expanding slower than the regions surrounding it. These valleys tend to pull matter in and create planets, stars, and galaxies - regions of space with higher-than-average densities of mass. Conversely, “mountains” in spacetime will repel matter away, an “anti-gravitational” effect, which gives rise to cosmic voids in space where we observe no matter. Each point on the surface of the universe bubble traces out a time arrow in 4-dimensional space, perpendicular to the surface. These time arrows are not parallel to each other since the universe is not flat. This causes points to have nonzero relative velocity away from each other. It is generally accepted that the universe is expanding faster than observable energy can explain, and this is expansion is believe to be still accelerating. The “missing” energy required to explain these observations has given rise to the theory of dark energy. The time dilation caused by non-parallel time arrows can be proposed as an explanation for dark energy. Alternatively, dark energy is real energy coming from potential energy gradients caused by non-parallel time arrows. As a sanity check, we can calculate the expansion rate of the universe based on the universe bubble model. Since the radius of the universe bubble is expanding at the speed of light in the time direction, it increases at 1 light second per second. Therefore, the “circumference” of the 3-dimensional surface increases by 2π light seconds per second, or about 1.88*10^6 km/s. This expansion is distributed equally across the 3-dimensional surface, so the actual observed expansion rate is proportional to the distance from the observer. At present, the age of the universe is estimated to be 13.8 billion years, so the radius of the universe bubble is 13.8 billion light years, or about 4233 megaparsecs (3.26 million light years to 1 Mpc). Thus, we can calculate the expansion rate of the universe, per megaparsec from the observer, as: Expansion rate = ((d(circumference))/dt)/radiusofuniverse=(1.88*〖10〗^6 km⁄s)/(2π*4233Mpc)=(1.88*〖10〗^6 km⁄s)/26598Mpc=70.82(km⁄s)/Mpc The popularly accepted empirical expansion rate is 73.5 + 2.5 km/s/Mpc, so our calculated value is close. There may be some additional source of expansion (or observed red shift) to make up for the discrepancy. For example, if two adjacent points have some gravitational gradient due to non-parallel time arrows, then light passing through these points will be red-shifted. - Cited from www.academia.edu/82481487/Title_Alternative_Explanation_of_Dark_Matter_and_Dark_Energy

  • @michaelccopelandsr7120
    @michaelccopelandsr71209 ай бұрын

    I need help with my new years resolution. I've figured out how to change the stars. My idea for changing the stars includes Orion and Pleiades (Subaru). I figure it's time to put something up there that's relevant to us, don't you think? Take Orion's belt and Betelgeuse becomes the head with a baseball hat. Below the belt are two legs bending at the knee. The feet aligning perfectly under the bent knees. The 3 stars of Orion's belt align perfectly as the 3 fat belt loops on a baseball uniform. The spear pointing at "Subaru" is the bat being swung and "Pleiades" is the baseball flying away after being hit. Put it all together and you get, "THE ALL-STAR." In my case, I see a left-handed batter and I imagine a "7" on the jersey. Which makes him, "Mickey." (As it should be ;-) But you can put any number you want, making, "THE ALL-STAR," any player you want. It'd be wrong of me to not, at least, try. This is me, trying. Pass it on, please and thank you. Don't worry, where I come from, crazy is a compliment. ;-P

  • @michaelccopelandsr7120
    @michaelccopelandsr71209 ай бұрын

    My idea so I get to name it! What I mean is, no one has claimed it so I'm officially calling, "Dibs." Voyager 1 is now in the, "Milky Way's interstellar time" or "Mikey's Time." "V-ger's" message has sped up now that it's outside our Sun's, "Time Bubble," or, "Terran Time." It will be faster, still, when "V-ger" sends a message from beyond the Milky Way's time bubble. Then there's Outside the Local Group time bubble. So on and so on until we get outside any influence and into the, "True Interstellar Time Standard." Or, "T.I..." ;-P Now that "V-ger" is outside our Sun's reach, in interstellar space, it's now in the Milky Way's faster moving, Interstellar Time or "Mikey's Time." This can be proven by turning off everything except its clock and transmitter. Have "V-ger" read time for as long as possible. They WILL show the flow of time speeds up the further away you get from any celestial bodies. Until you reach the Milky Way's time standard or "Mikey's Time." •Our sun's time bubble: "Terran Time" we know and have measured. In a lifetime, our head is one second younger than our feet. •Milky Way's time bubble or "Mikey's Time." The rate/flow of TIME outside any influence but within the Milky Way: We just got there and are still figuring what the difference is. Wild guess I'd say time will increase in speed, now and until V-ger is outside the Ort cloud. •Local Group's time bubble or the rate/flow of time outside of any influence but within the Local Group: Name still open and unknown. Wild guess .08 P-22% to a couple seconds faster, maybe. Used just for reference. •Outside any influence in the, "True Interstellar Time Standard." (or T.I...) ;-P This name is NOT up for grabs. The rate/flow of time is fastest here. (Time flows fastest here so it's best to use a motor boat and hold tight. Always applies when you're in T.I....) ;-P A minute is a minute in all. It's the rate/flow I'm talking about. Heck, rivers of time flowing differently might explain dark energy and dark matter. The Milky Way's Interstellar Time Standard will be known as, "Mikey's Time." Pass it on, please and thank you!

  • @galaxypat24
    @galaxypat242 жыл бұрын

    Where to find your ebook?

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    What Ebook?

  • @galaxypat24

    @galaxypat24

    2 жыл бұрын

    @@thecosmologicalreality don't you have an Instagram account with the link to a cool physics ebook in it's bio? 🥺 I can't find that account but when I clicked on that link, it brought me here. Maybe it was the wrong link 😞 Sorry.

  • @thecosmologicalreality

    @thecosmologicalreality

    2 жыл бұрын

    @@galaxypat24 oh yes, it is from space is phenomenal the books are by physics gene you can find the link to books at @physicsgene instgram page

  • @galaxypat24

    @galaxypat24

    2 жыл бұрын

    @@thecosmologicalreality awesome! Thank you so much! 🤠🤠🤠

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