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View Full Version : Constant Rain of Space Dust Adds Up



Fraser
2006-Aug-07, 03:20 PM
A slow, steady rain of cosmic space dust is always falling through the Earth's atmosphere. These particles from space are infused with a rare isotope of helium that makes it immediately identifiable compared to a more common isotope of helium we find here on Earth. Scientists recently drilled an ice core in Antarctica containing a record of this dust fall that goes back 30,000 years. This new data gives scientists another line of data to study global climate history as the ratio between the isotopes varies between interglacial periods.

Read the full blog entry (http://www.universetoday.com/2006/08/07/constant-rain-of-space-dust-adds-up/)