Astronomers may have discovered the first moon beyond our Solar System
Astronomers have uncovered evidence of a bizarre, potentially historic discovery: the first moon ever detected beyond our Solar System.
Astronomers have uncovered evidence of a bizarre, potentially historic discovery: the first moon ever detected beyond our Solar System.
Unlike familiar moons, this mysterious object is at least as massive as Jupiter and orbits a brown dwarf, which itself circles a star.
The unusual arrangement challenges traditional definitions of planets and moons, leaving scientists unsure what to call it.
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