Answer: Is universe expanding faster than speed of light?
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@apspacking they need string theory that non scientific people don't know anything about to explain the speed of light and as always we are always fascinated by what we don't understand and it cant be proven other than in string theory so they say.
2Crystalight 3 weeks ago
@2Crystalight And why do you say that?
capefeather 3 weeks ago
lol what a lot of hogwash
2Crystalight 2 months ago
@stramster1
Thanks.
apspacking 3 months ago
@apspacking The smoking gun for an expanding universe is the red shift of galaxies that are not gravitationally bound to ours. The more distant the galaxy the more the spectrum is shifted to the red due to the doppler effect indicating higher recession velocity. This is to say that the wavelength of the light is being stretched out buy the expanding space between the galaxies. This is known as the Hubble constant and is currently calculated to 70.8(km/s) per Megaparsec.
I hope that helps.
stramster1 3 months ago
@apspacking
we are expanding... let's say, you see a bomb, when it explodes, will the burst expand or contract? it expands, the particles go away from its center. Just like our universe, galaxies are going further from each other, which somehow concludes that something might happen that causes its expansion, it's now called as big bang theory.
Universe, to make it infinite does it need to expand or contract?
chesster423 3 months ago
thank you for explanation
theramoz1 4 months ago
If we have not seen light from the expanding part of the universe, what did we see that makes us to believe that "the universe is expanding faster than speed of light"?
Some thing that we can not see, how can we say is expanding?
apspacking 4 months ago
Good question
rhov233 4 months ago
@PlanetJeroen Not really. The "expanding" is going faster then the speed of light, it's been proven by observing galaxies going further away from eachother, and the light can't keep up. So the expanding of the universe is expanding faster then the speed of light, but the expanding is not really a velocity, it's an expanding. get it :P?.
nils4545 4 months ago