Alien planets keep their parent stars young by forcing them to 'exercise'

Planets and stars are almost like parents and children, a new study suggests: The smaller bodies keep the larger ones active, helping them stay young for longer.

Alien planets keep their parent stars young by forcing them to 'exercise'
Planets and stars are almost like parents and children, a new study suggests: The smaller bodies keep the larger ones active, helping them stay young for longer.

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