A strangely dim “ghost” dwarf galaxy called Antlia 2 has been discovered orbiting the Milky Way. The galaxy is about the same size as the 7,000 light-year-wide Large Magellanic Cloud - the Milky Way’s largest satellite - yet it’s 10,000 times fainter. Astronomers say it could be just one of many.

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A strangely dim “ghost” dwarf galaxy called Antlia 2 has been discovered orbiting the Milky Way. The galaxy is about the same size as the 7,000 light-year-wide Large Magellanic Cloud - the Milky Way’s largest satellite - yet it’s 10,000 times fainter. Astronomers say it could be just one of many.