Tag: dwarf galaxies
The gravitational waltz of the Milky Way’s satellites
[ This blog is dedicated to tracking my most recent publications. Subscribe to the feed to keep up with all the science stories I write! ] I’ve started contributing to the Forbes Science page again! This is my first new contribution, relating to the second data release from the Gaia survey telescope. (And if I…
Why do half of Andromeda’s satellite galaxies orbit in a plane?
Our local group of galaxies—known imaginatively as the Local Group—has two huge galaxies: the Milky Way and M31, also known as the Andromeda Galaxy. Both of these galaxies are large enough to have a number of satellites, including the substantial Magellanic Clouds and M33 (Triangulum Galaxy). However, most satellites are dwarf galaxies, very faint and…