Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
|---|---|
| North Galactic Spur |
A region of radio and X-ray emission extending northwards from the plane of the Galaxy. It appears to be the most prominent segment of a huge ring of gas, probably a very old supernova remnant.
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