There is a supermassive black hole at the center of nearly every big galaxy—including ours, the Milky Way (it's called ...
The four exoplanets orbit Barnard’s Star so closely that their years last only a few Earth days. They are probably rocky and, ...
A new world has just been found orbiting a Sun-like star only 20 light-years away, and it could be one of the most promising ...
The planet WASP-121b is extreme. It's a gas giant almost twice as big as Jupiter orbiting extremely close to its star–50 ...
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