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

If we could go back 101 years, we would encounter a time when scientists still thought the Milky Way was the entirety of our ...

The Andromeda galaxy, our nearest major galactic neighbor and one of the most iconic objects in the night sky, has captivated ...

In this special Hubble image 23 years in the making, the sparkling spiral galaxy UGC 10043 reveals the secrets of its ...

A newly released Hubble pic shows the galaxy LEDA 22057, where the supernova explosion occurred. The spiral galaxy's swirling ...

"At first, I thought I completely messed up during our research," Olivia Achenbach of the United States Naval Academy told ...

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 ...

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

This NASA/ESA Hubble Space Telescope image reveals a tiny patch of sky in the constellation Hydra. The stars and galaxies ...

Messier 31 is located 2.5 million light-years away from Earth and was a much bigger target in the sky than the galaxies ...

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