Saturn is below Venus and very low in the predawn sky. In late April it is five degrees above the horizon. You may need ...

A part of space 4,000 light-years away is filled with baby stars, and the Hubble Space Telescope can see them. Two new photos taken by the intrepid telescope and released to celebrate the eye on ...

Hubble and its fellow observatories give us an unprecedented, crystal-clear look at the far reaches of the cosmos. Explore these orbiting pioneers and learn what they've discovered. 3 min read The ...

Hubble was built to be tuned up in orbit. But it wasn't designed for the major overhaul NASA astronauts undertook during its fourth servicing mission, 3B, in March 2002. They delved into the ...