The magnificent Andromeda galaxy (Messier 31), stands out as the most important nearby stellar island to our Milky Way, and ...

Hours before Jan. 19, after the Supreme Court upheld a law that would require TikTok be sold to a U.S.-held company in order ...

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 ...

Groundbreaking research into Mars' energy balance reveals a polar surplus driving dynamic weather patterns, including massive ...

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

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 ...

This rare quasar with spiral arms could help astronomers understand how supermassive black holes feed and grow.

Discover the fascinating story of the 'blue lurker,' a mysterious star in the M67 star cluster studied by NASA's Hubble ...

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 ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda Galaxy. The team includes several UC Santa Cruz researchers who made significant ...