Inspired by a couple of other posts I saw today
In: 102
Beyond having a magnetic core from the iron inside our planet when it formed, the Earth was also struck by another Planet sided object, around the size of Mars.
This caused two things to happen, 1) the Earths iron increased in size dramatically and 2) the moon was formed.
The magnetic core mostly blocks the solar radiation as it’s most important function protecting the atmosphere.
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