Using data from the Gaia space telescope, a team has shown that large parts of the Milky Way's outer disk vibrate. The ripples are caused by a dwarf galaxy, now seen in the constellation Sagittarius, that shook our galaxy as it passed by hundreds of millions of years ago.
Mysterious ripples in the Milky Way were caused by a passing dwarf galaxy
- ScienceDaily
- 23. 9 2022 (18:17)