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View Full Version : Dark Spots on the Moon Show a Turbulent Solar System



Fraser
2005-Sep-07, 07:57 PM
SUMMARY: Only when the Apollo astronauts finally stepped out onto the surface of the Moon was the mystery of its dark patches finally revealed - they're ancient impact basins that filled with lava 700 million years after the formation of the Earth and Moon. Scientists now think this late heavy bombardment might have come from a time when the giant planets in the Solar System were changing orbits; Jupiter moved inward, while Saturn, Uranus and Neptune headed away from the Sun. The gravitational side-effect of this shuffling sent a rain of smaller objects that struck the Moon and other planets in the Solar System.

View full article (http://www.universetoday.com/am/publish/dark_spots_moon.html)
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