New Radar Map Reveals The Moon’s Hidden Geology
As the public prepares for the upcoming eclipse, astronomers have released a striking new radar view of the Moon. Researchers from the Smithsonian’s National Air and Space Museum are using radio telescopes at the Arecibo Observatory and Green Bank Observatory to map the Moon with radar.
This is a radar view of the Moon’s southeastern highlands, showing the densely cratered surface formed as the result of more than 4 billion years of meteorite impacts. The radar can distinguish the age of some craters. Younger impact craters have enhanced radar return showing bright floors and surrounding areas due to rocky material that has not yet been worn away by very small meteorites.
In this image North is up, and the bright crater at the upper right is Theophilus. The dark ring in the image is due to the pattern formed by the transmitting and receiving antennas.
Image courtesy Bruce A. Campbell, Smithsonian’s Air and Space Museum, GBT Green Bank Observatory/AUI/NSF, Arecibo Observatory.
Contacts and sources:
Paul Vosteen
Green Bank Observatory
Source:
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