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Dwarf galaxies

เผยแพร่:   โดย: MGR Online

A handout photo released on January 23, 2017 by the Nature Publishing Group shows an optical image of one of the isolated galaxy groups observed with the Magellan Telescope in Chile. The red knots reveal emissions that signify recent and ongoing star formation. The deep optical image also reveals asymmetrical morphologies/shapes possibly resulting from an interaction. Kelsey E Johnson, Sandra E Liss, and Sabrina Stierwalt/Nature Publishing Group/AFP
The first sighting of clustered dwarf galaxies bolsters a leading theory about how big galaxies such as our Milky Way are formed, and how dark matter binds them, researchers said on January 23.

Theorised but never seen, the bundled galaxies were discovered using the largest optical survey of the night sky ever compiled, they reported in the journal Nature Astronomy.

Seven clusters of three-to-five galaxies are each 10 to 1,000 times smaller than the Milky Way.
A handout photo released on January 23, 2017 by the Nature Publishing Group shows four of the dwarf galaxies. Kelsey E Johnson, Sandra E Liss, and Sabrina Stierwalt/Nature Publishing Group/AFP
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