Some stars have planets. Others are orbited by brown dwarfs, balls of gas too massive to be planets, but too low-mass to be stars. Astronomers love these brown dwarf-star pairs because being paired with a star helps reveal a brown dwarf’s age. Ages of astronomical objects are often hard to measure, ...
Search for Hidden Cosmic Companions in Sun’s Backyard
By system
June 17, 2026 •
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Original source:
NASA
