The Asteroid Belt, found between Jupiter and Mars, may have been the source of ammunition for the Late Heavy Bombardment. Credit: NASA/JPL-Caltch/T.PyleFrom Cosmos:
PORTLAND, OREGON: A shift in Jupiter's orbit early in the life of the Solar System dislodged thousands of rocks from the Asteroid Belt, causing them to hit the inner planets, including Earth.
Evidence for this cataclysmic bombardment comes from a reanalysis of lunar rocks brought back by the Apollo astronauts and a careful study of lunar craters, said David Kring, a planetary geologist at the Lunar and Planetary Institute in Houston, Texas.
Kring presented his findings this week at the Geological Society of America's annual meeting in Portland, USA.
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