Since the 1990s, astronomers have found a handful of other dwarf planets in the belt, such as Eris and Sedna, along with ...
A massive star in the nearby Andromeda galaxy has simply disappeared. Some astronomers believe that it's collapsed in on itself and formed a black hole.
When you buy through links on our articles, Future and its syndication partners may earn a commission. The stars of the Pleiades cluster, the most well-known of which are referred to as the "Seven ...
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