In case you don't know, Milky Way is actually a mother. In fact, She has 2 sons: Small Magellanic Cloud (The Smaller Green one) , and Large Magellanic Cloud (The Larger, mostly Dark Blue one). But sadly, they won't last long, as they are starting to collide with their mother galaxy. After that, Milky Way will start to feel disgusted and upset. Swallowing the 2 will leave a bad taste to her mouth, but she will also be upset because she lost her 2 sons. For now, they are a very happy family. 2 sons, and their mom. Both of them are satellite galaxies of Milky Way, which Is why I made them into sons.
IDK.
