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A supernova shone in the night sky 1,000 years ago. Astronomers have now found its leftover ‘zombie star’
For six months in 1181, a dying star left a mark in the night sky. The striking object appeared as bright as Saturn in the vicinity of the constellation Cassiopeia, and historical chronicles from China and Japan recorded it as a “guest star.”
Moon is shrinking - could be problem for astronauts
A region of the moon that’s at the center of a new international space race because it may contain water ice could be less hospitable than once thought, new research has found.