A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

Our sun is a lonely star. At least half the stars in our galaxy have binary companions. This was nicely illustrated in the ...

The universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous—and highly ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

"The question 'Are we alone?' is one of the most significant questions, not just in the history of science, but in the ...

Proposed budget reductions for the Hubble Space Telescope would impact research and outreach as well as increase the risk to ...

For humans, the most important star in the universe is our sun. The second-most important star is nestled inside the ...

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous -- and highly debated -- results had shown: The Universe is expanding faster than predicted by ...

The Hubble Space Telescope has captured imagery of the most distant single star found yet. It took the light from the star 12 ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous — and highly debated ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...