Stripping Down Science
“A nearby star that had reached the end of its life is thought to have blown itself to pieces in a catastrophic explosion known as a supernova, producing in the process a multimillion mile an hour maelstrom of dust and debris. This cannoned through space until it ran headlong into a cloud of swirling gas.This cloud would have been about 100 times the present earthâsun distance in diameter and would have weighed about three times as much as the sun. The arriving shockwave is thought to have squ...eezed the gas together, causing it to begin to collapse under its own gravity, triggering the formation of a central âproto-starâ. This would have been surrounded by a protoplanetary soup of spinning material from which the planets we see today would slowly have emerged as gravity glued the debris together.
A nice theory, but a recent scientific discovery has shown that itâs a myth. If this model of earthâs birth were true, then remnants from the early solar system, such as ancient meteorites, ought to contain the signature of radioactive iron compounds known as iron-60, which would have been blasted from the innards of the star that exploded.MoreLess
A nice theory, but a recent scientific discovery has shown that itâs a myth. If this model of earthâs birth were true, then remnants from the early solar system, such as ancient meteorites, ought to contain the signature of radioactive iron compounds known as iron-60, which would have been blasted from the innards of the star that exploded.MoreLess
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