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- Astronomy - Wikipedia
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos It uses mathematics, physics, and chemistry to explain their origin and their overall evolution
- Astronomy Magazine: Space News, Observing, Planets, Galaxies
Astronomy Magazine – Your source for the latest news on astronomy, observing events, space missions, and more
- Astronomy | Definition, History, Discoveries, Facts | Britannica
Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena Since the late 19th century, astronomy has expanded to include astrophysics, the application of physical and chemical knowledge to an understanding of the nature of celestial objects
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