Researchers studying fossil meteorites posit extraterrestrial dust from asteroid collisions has had a cooling effect on Earth.

The Morning News https://ift.tt/2QdRIrz

An asteroid could be captured and brought to one of the Lagrange points between the sun and Earth—an unstable zone where the gravitational pull of each is equal—allowing it to produce dust that blocks sunlight.

↩︎ The New York Times

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