What has Hubble taught us?

Hubble has been an invaluable source of information, helping astronomers understand phenomena such as dark energy and quasars. It has even helped scientists to calculate the age of the universe. Thanks to Hubble, scientists now think that it is between 13 and 14 billion years old. Thousands of research papers have been written on the basis of information collected by Hubble, while all its data has been collected into a public archive for all to use. It has also brought us the deepest telescopic views of the universe ever produced, allowing scientists to look back in time at how the universe looked a few hundred million years after its birth

Independent, Dec. 5, 2007