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Redshift measurements on a constellation show that it is receding with a velocity of 7600km/s. How...

Redshift measurements on a constellation show that it is receding with a velocity of 7600km/s.
How far away is the galaxy?

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Answer #1

We know by hubble law:

Were,

is Hubble constant=67.4 km/s/Mpc.

is recession velocity.

is distance between the galaxy.

Putting the given values in the equation we hvae:

​​​​​​

Or,

Hence the galaxy is 112.76 Mega-parsec Away

Or , 376.6 Mega light year away.

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