The phenomenon of cosmological redshift shows that the universe is expanding . true or false

True

Explanation:

The astronomers observed that the light which is coming from the distance objects is shifted towards the red shift which means the objects are receding away from us.

And this receding is in any direction which means in whatever direction you look at the distance object you will observe that they are going away fro us. This is caused by the continuous expanding of universe which is explained by the Hubble.

Therefore, it can be say that the cosmological red shifts phenomena shows that the expanding of universe.

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

v 154.9= 0.9 length length s little over 154.9cm