this post was submitted on 01 Jun 2026
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Science

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Something Made Earth's Molten Core Reverse Direction in 2010 (www.sciencealert.com)
submitted 1 day ago by ooli3@sopuli.xyz to c/science@beehaw.org
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[–] Jack@lemmy.ca 4 points 21 hours ago* (last edited 21 hours ago)

"The magnetic field is vital to our continued existence. It helps keep the atmosphere we breathe in"

I knew about reducing how much cosmic radiation we receive, but not about protecting the atmosphere:

"Many scientists have argued that the magnetic field is crucial for protecting the atmosphere from erosion by energetic particles coming from the Sun." https://science.nasa.gov/earth/earth-oxygen-magnetic-field-linked/

Also, "the planetary magnetic field has followed similar rising and falling patterns as oxygen in the atmosphere for nearly a half billion years, dating back to the Cambrian explosion, when complex life on Earth emerged."