Science news articles about 'companion galaxy'

  • How do galaxies grow?

    ... 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," ...
  • Intense heat killed the Universe's would-be galaxies, researchers say

    ... 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 ...
  • Colossal black holes common in early universe

    ... 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 ...

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