1. Scientists think they have found the
speed at witch the universe is expanding.
2.This is important for estimating the age ,science
and the future os the universe .
3.70 years ago,Hubble provided evidence that the
universe is not peaceful and unchanging but
developing.
4.He said that galaxies in space were moving away
from each other at speeds which increase with distance.
5.The earlier estimates differ widely:Some say the
universe is 10,000million years old .others say it could be
as much as 20,000million years old .
6.27 scientists used the hubble space telescope to
observe 18 galaxies as far as 65 million light years from
earth,they discovered 800 very bright stars in those
galaxies and used them to compare several other methods of
measuring distances in space,they say that the universe has
been expanding for