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Astronomy is a science involving the observation and explanation of events occurring outside Earth and its atmosphere. It includes the study of the origin, evolution, and physical and chemical properties of objects that can be observed in the sky, space, and in the whole universe.
This category has the following 12 subcategories, out of 12 total.
- Outer space (12 C)
- History of astronomy (5 C)
- Astronomical myths (1 C)
- Astronomy organizations (4 C)
- Astronomy projects (2 C, 3 P)
- Space observatories (2 P)
- Unsolved problems in astronomy (1 C, 1 P)