Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected].
How do we know the age of the planets and stars? – Swara D., age 13, Thane, India
Measuring the ages of planets and stars helps scientists understand when they formed and how they change – and, in the case of planets, if life has had time to have evolved on them.
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