If you've studied it "a little", what does it say?James Beedy said:A little but I don't understand how the problem is set up to do it.
The Recessional Velocity of a galaxy refers to the speed at which a galaxy is moving away from us, as observed from Earth. This is due to the expansion of the universe, as described by Hubble's Law.
Recessional Velocity is measured using a technique called redshift. This involves measuring the shift in the wavelength of light emitted by a galaxy, compared to the wavelength of that same light when it reaches Earth. This shift is caused by the stretching of space as the galaxy moves away from us.
The Recessional Velocity of a galaxy is significant because it provides evidence for the expansion of the universe. It also allows us to estimate the distance to a galaxy, as the further away a galaxy is, the faster it appears to be receding from us.
Yes, Recessional Velocity can change over time. This is because the expansion of the universe is not constant, and the rate of expansion has been increasing over time. Therefore, the Recessional Velocity of a galaxy will also increase over time.
The Recessional Velocity of a galaxy is directly related to the age of the universe. This is because the expansion of the universe has been happening since the Big Bang, and the faster a galaxy is receding from us, the longer it has been expanding. Therefore, the Recessional Velocity of a galaxy can give us an estimate of the age of the universe.