Planets can force their host stars to act younger than their age, according to a new study of multiple systems using NASA’s Chandra X-ray Observatory. This may be the best evidence to date that some planets apparently slow down the aging process for their host stars.
While the anti-aging property of “hot Jupiters” (that is, gas giant exoplanets that orbit a star at Mercury’s distance or closer) has been seen before, this result is the first time it has been systematically documented, providing the strongest test yet of this exotic phenomenon.
“In medicine, you need a lot of patients enrolled in a study to know if the effects are real or some sort of outlier,” said Ni...
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