As the name suggests, this galaxy may look like the wheels of a wagon to some. The Cartwheel Galaxy and the galaxies to its left are part of a cluster of galaxies in the Sculptor star cluster, about 500 million...
Europa, the fourth largest of Jupiter's 95 moons, holds a special place in our solar system. It is the sixth closest moon to Jupiter and, along with Io, Ganymede, and Callisto, was among the first moons discovered beyond Earth. These...
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