Science news articles about 'companion galaxy'

... Hubble Space Telescope, to study in great detail galaxies located 4 billion light-years ... four groups, the brightest galaxy also has a bright companion galaxy. These galaxy pairs are merging systems," ...

... like the Milky Way have so few companion galaxies or satellites. Astronomers have found a few dozen ... hinges on finding a satisfactory explanation for why galaxies like the Milky Way have so few ...

... spinning black hole that is feeding on its home galaxy. When 4C60.07 was first studied, astronomers ... formation is taking place in a previously unseen companion galaxy, rich in gas and deeply enshrouded ...