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Questions and Answers

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Each category below contains a brief description about that topic.

The Chandra Mission

Cosmology/Universe

Questions about the Big Picture: the size, age, mass and origins of the universe.
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X-Ray Sources

Questions about specific types of cosmic X-ray sources.

Dark Matter

WIMPS, extra-solar planets and other possibilites for the dark matter mystery.
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X-ray Astronomy

Questions that have to do specifically with X-ray Astonomy
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General Astronomy and Space Science

Questions about astronomy and space science that don't fit in the above categories.
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Miscellaneous

Questions about the Harvard-Smithsonian Center for Astrophysics, NASA, our image use policy, obtaining hard copies of images, job opportunities.
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