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A new model keeps the solar system safe for the young Earth and other infant planets by preventing them from spiraling into the sun.
When astronomers simulate the formation of the solar system, disaster strikes: no planets survive. Under most models’ assumptions, protoplanets would have collided with the parent star before they had a chance to fully form.
“This contradicts basic observational evidence: the fact that we are here,” said Mordecai-Mark Mac Low of the American Museum of Natural History at a press briefing January 7 at the winter meeting of the American Astronomical Society.