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The Milky Way's outer halo has many globular clusters with a retrograde orbit (about 40% of all clusters in Milky Way). One of the more prominent example include Kapteyn's star which is highly retrograde due to it being ripped from a dwarf galaxy and merging with the Milky Way. However, the structure of the halo is a topic of an ongoing debate. Several ...


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Retrograde is in fact an illusion. The earth revolves around the sun faster than the planets farther from the sun. And if the Earth passes one of those distant planets on its journey around the Sun, for us who are on Earth, you think if you can choose it, but it's just an illusion. The planet is moving in the same direction as it always has, but our ...


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