Astronomy View all facts Glossary Help| Astronomy View all facts Glossary Help |
| abstraction > science > astronomy |
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| astronomy comparison table | |
| Subject | has definition |
|---|---|
| extragalactic astronomy | The field that deals with objects beyond the Milky Way, especially galaxies and quasars. |
| galactic astronomy | The study of the Milky Way. |
| radio astronomy | Study of the universe at the radio wavelengths of electromagnetic energy. |
| X-ray astronomy | Detection of stellar and interstellar X-ray emission. Because X-rays are almost entirely filtered out by the Earth's upper atmosphere, the use of balloon- and rocket-borne equipment is essential. |