Exomoon Candidate Reported Orbiting Brown Dwarf CD-35 2722
Astronomers using the VLT have found evidence of a giant exosatellite orbiting a brown dwarf that itself orbits a star about 73 light-years away, with the candidate’s mass near Jupiter and an orbital period around 170 days. The discovery challenges traditional labels of planet, moon, and even star, prompting ongoing debate over nomenclature and definitions of exomoons as researchers describe the object as an exosatellite while many favor calling it a moon.
Science · 7 sources · Jul 23, 2026Read itThe journal
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The Solar System is the gravitationally bound system of the Sun and the masses that orbit it, most prominently its eight planets, of which Earth is one. The Solar System is an isolated single-star planetary system within the Milky Way Galaxy. The system formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, creating the Sun and a protoplanetary disc from which the orbiting bodies assembled.
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