Astronomers have constructed telescopes of every kind - massive observatories designed to pick up faint traces of light across space.

A NASA-funded plan to build a large radio telescope on the moon's far side is nearing final approval and could become a reality by the 2030s, researchers say. The ambitious project will help safeguard ...

2009 is the International Year of Astronomy, celebrating the 400th anniversary of Galileo turning a looking glass to the sky and shaking up humanity's view of the heavens. Then, puny telescopes ...