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For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.
NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.
I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...
Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.