97% of Galaxies Are Moving Faster Than Light, HOW IS THIS POSSIBLE?

Ninety seven percent of the galaxies in the observable universe are moving away from us faster than the speed of light. You might wonder how this can be true when one of the unbreakable laws of the universe is that nothing can travel faster than light. But this only applies to things moving through space and these distant galaxies are getting further away from us because the space between us is expanding. So the distance between us and them is increasing faster than light could travel across that space. This is also why the observable Universe is 45 billion light years across despite only being 13.8 billion years old.
#space #cosmology #DomainOfScience

Sources I used for the info in the video

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[Everyyoueverymiau]

This video makes me happy and very sad at the same time.

[ScopeofScience]

The light finally reaches the lenses of the telescopes of the *semi-intelligent* apes.
lol. Well, you're not wrong, Dom.

[upsilonalpha]

We all need some relative distance during this quarantine.

[gaurav_]

I can't believe this is the first time I have learned the difference between observable universe and sphere of inaccessibility
Or even if their was a difference
You're awesome 🙌

[stza]

I would like to attend one of these anteater parties.

[eeka_droid]

This was the most amazing video i've ever seen about observable universe, dark energy and expansion, light doppler effect and those other "basic things" to understand the universe but nobody seem to be able to come up with simple and ilustrative examples like this one. Thank you so much for this information!

[kaitlynhollinger]

Thank you, this was the most understandable explanation of this concept that I’ve seen.

[diorynovis]

While our body's ability to travel is shrinking due to covid lockdown, this video makes our imagination expand.

[charlessnyder]

It makes me sad that E. T. could never phone home, thanks to the expansion of the universe. 😢

[VeriVeronika]

Its so painfully tragic how the more of the universe we can see, the less we can ever hope to even signal. Very humbling.

[MATropez]

In distant future though won't expansion of observable universe hit the end when light from distant galaxy will not be fast enough to overcome expansion of space between photon and earth ?

[TimondeNood]

Wow, I think you really did a great job at explaining this matter. I finally get a bit of a grip on it! Thank you so much

[pandabutter]

I love these videos because I can never wrap my head around this kind of stuff

[muhllandschaft]

So the rate of expansion is 70*10^3 (m/s)/Mpc
That gives the distance of the galaxies moving at exactly the speed of light away from us as c/(70*10^3 (m/s)/Mpc)=1.4*10^10 ly (1Mpc = 3.26*10^6 ly)
The volume of the sphere of accessibility is V1=4/3*pi*(1.4*10^10 ly)^3=1.15*10^31 ly^3
The volume of the observable universe is V2=4/3*pi*(45*10^9 ly)^3=3.82*10^32 ly^3
(V1/V2)*100=3% which is the part of the observable universe that is accessible to us.
If we assume that galaxies are distributed equally in the observable universe, then 97% of them are inaccessible.

[xanamata]

-what is faster than the speed of light ?
-space of course
-and where is this light travel ?
-ehm, then the only thing left since light ca not catch up with space, is time

[haroos]

The more i see these videos, the more i think physicists don't realy know what they are talking about.

[adrianbiber]

"So we'll be able to *see* more of the universe, but be *in touch* with less and less"
Kind of like the story of technological progress... out of touch with Nature and each other, even though we have facetime and tele/micro-scopes.

[-andrea-]

hey i dont know if you will see this, but i just wanted to say your channel is amazing and my interest in science has re opened because of your videos :) im only 15 but i really hope to expand my knowledge so thank you for inspiring me <3

[GamesBond.]

And how exactly does light travel in a space that expands faster than the speed of light ? How can that light ever reach us if space moves the light away from us as it expands ? If a car travels with 100kmh on a road that is expanding with a speed >100km/h in the opossite direction, will that car ever get to the end of the road ?

[jerwilliamsmith]

I was listening to this episode while cooking dinner, and I kept wondering why all of the aunts in the first example were named Ita 🤦🏼‍♂️