National Geographic
@NatGeo · Aug 18, 2020
Earth spins on its axis once about every 24 hours. But the inner core is a roughly moon-size ball of iron floating within an ocean of molten metal on.natgeo.com/31ZE3XP
Elon Musk
@elonmusk
Must be aliens
06:16 AM · August 18, 2020 · 0 views
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