2015
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Events
- March 6 - The "Dawn" spacecraft begins to orbit Ceres, becoming the first spacecraft to visit a dwarf planet.
- July 8 - Astronomers report the discovery of an extremely rare five-star solar system.
- September 14 - Astronomers report unusual light fluctuations of "KIC 8462852," a star in the constellation Cygnus, while searching for exoplanets. Various explanations were presented, including those based on comets, asteroids, as well as, an alien civilization.
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