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Nature 409, 462-463 (25 January 2001) | doi:10.1038/35054155

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Extrasolar planets: Giant giants or dwarf dwarfs?

Alan P. Boss

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An object at least 17 times the size of Jupiter, discovered orbiting a Sun-like star, has astronomers scratching their heads. Is it a giant planet or a failed star?

Planet hunters keep discovering yet more weird objects around nearby Sun-like stars that resemble nothing found in our own Solar System. The latest discoveries, announced at a meeting earlier this month*, include a three-body system that appears to be composed of a central star orbited by two objects with masses no smaller than 7.