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Lunar Madness & Planetary Thrills HAL September 16, 2004 By: Richard Orr

Lunar Madness & Planetary Thrills HAL September 16, 2004 By: Richard Orr. Live Fast -- Die Young. The moon is 4.5 billion years old and was formed when a Mars sized planet collided with a 50 million year old earth

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Lunar Madness & Planetary Thrills HAL September 16, 2004 By: Richard Orr

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  1. Lunar Madness & Planetary Thrills HAL September 16, 2004 By: Richard Orr

  2. Live Fast -- Die Young The moon is 4.5 billion years old and was formed when a Mars sized planet collided with a 50 million year old earth The highlands (areas that are not dark) are covered with impact craters which occurred mostly between 4.5 and 3.0 billion years ago The dark areas are huge impact basins from asteroid-sized collisions – the last occurred 3.5 billion years ago These different areas were capped at different times with basaltic rock; but this ended 3 billion years ago Little has changed in 3 billion years and is geologically inactive

  3. INTRODUCING THE LUNAR 100By Charles A. WoodApril 2004 – S &T

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