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Top 10 Chandra Pictures: Four Years of X-ray Imaging
By Robert Roy Britt
Senior Science Writer
posted: 07:00 am ET
02 September 2003
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7. Mars in X-rays
X-rays produced by fluorescent radiation from oxygen atoms gave astronomers
a unique look at the sparse upper atmosphere of Mars.
The Martian radiation is created in a process similar to the way light is created in fluorescent bulbs. X-rays from the Sun collide with oxygen atoms in the thin Martian atmosphere, about 75 miles (120 kilometers) above the surface. [Full Story]
Summer Space Shots: Hubble
| Planets
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Space
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