Young sun-like star shows a magnetic field was critical for life on the early Earth

Wednesday, March 16, 2016 - 12:20 in Astronomy & Space

Nearly four billion years ago, life arose on Earth. Life appeared because our planet had a rocky surface, liquid water, and a blanketing atmosphere. But life thrived thanks to another necessary ingredient: the presence of a protective magnetic field. A new study of the young, Sun-like star Kappa Ceti shows that a magnetic field plays a key role in making a planet conducive to life.

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