Astronomers have discovered the most distant and powerful 'odd radio circle' (ORC) ever detected. These enormous, mysterious ...

A 50-million-light-year-long flow of hydrogen gas has been observed linking two tiny galaxies 50 million light-years away, giving astronomers a spectacular view of how galaxies attract, warp, and ...

When galaxies collide, it's not a gentle affair, but it does take millions of years. Over this time, the two massive star systems slowly merge together, their gravitational pull drawing them closer.

Standing on Earth and gazing out into the night sky, you’d think our Milky Way galaxy is relatively calm. Most nearby ...

Scientists recreated the Milky Way’s history using supercomputers to track where dark matter should collect and collide.