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| NASA spacecraft reveals recent geological activity on the moon Posted: 20 Feb 2012 10:50 AM PST New images from NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft show the moon's crust is being stretched, forming minute valleys in a few small areas on the lunar surface. Scientists propose this geologic activity occurred less than 50 million years ago, which is considered recent compared to the moon's age of more than 4.5 billion years.  |
| Building blocks of early Earth survived collision that created moon Posted: 18 Feb 2012 10:45 AM PST Unexpected new findings by geochemists show that some portions of the Earth's mantle (the rocky layer between Earth's metallic core and crust) formed when the planet was much smaller than it is now, and that some of this early-formed mantle survived Earth's turbulent formation, including a collision with another planet-sized body that many scientists believe led to the creation of the moon.  |
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