Andromeda Dwarf Galaxies Captured
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Science
How did Andromeda's dwarf galaxies form? Hubble Telescope finds more questions than answers
76% Informative
Hubble Space Telescope captures a family of dwarf galaxies swarming around the Andromeda Galaxy.
Many of the galaxies exhibit puzzling orbits that conventional theories have so far been unable to explain.
Some of Andromeda 's dwarf galaxies never stopped forming stars, continuing to do so at a slow rate throughout cosmic history.
Another peculiarity is how the orbits of some of the dwarfs are arranged, with half of them in the same plane.
Our Milky Way galaxy and the Andromeda galaxy have experienced significantly different histories.
This calls into question how wise it is to use our own galaxy as a template for other galaxies.
Evidence growing that galaxies can be quite diverse, with different properties and histories.
The new findings were published on Jan. 28 in The Astrophysical Journal .
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