Astronomers spot a moon-like world around a brown dwarf, hinting at the first exosatellite beyond our solar system
TL;DR Summary
Astronomers report what could be the first plausible detection of an exosatellite—a planet-mass body orbiting a substellar companion around a brown dwarf rather than a star—found by watching tiny wobbles in the brown dwarf; if confirmed, it would expand our understanding of moons beyond our solar system and was described in a Nature paper.
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