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Astronomy - Wikipedia
"Astronomy" and "astrophysics" are broadly synonymous in modern usage. [3][4][5] In dictionary definitions, "astronomy" is "the study of objects and matter outside the Earth's atmosphere and of their physical and chemical properties", [6] while "astrophysics" is the branch of astronomy dealing with "the behavior, physical properties, and ...

Astronomy Magazine: Space News, Observing, Planets, Galaxies
Astronomy.com is for anyone who wants to learn more about astronomy and space, including planets, galaxies, asteroids, and NASA.

Astronomy: Everything you need to know | Space
Astronomy was born out of humankind's ancient fascination with the star-studded sky.

Astronomy - NASA
NASA Continues to Study Pulsars, 50 Years After Their Chance Discovery

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.

NASA
NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.

What is Astronomy? - AMNH
Astronomy is the study of everything in the universe beyond Earth’s atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars . It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles. And it even includes questions about things we can't see at all, like dark matter ...

What Is Astronomy? - sciencenewstoday.org
Astronomy is the scientific study of celestial objects, space, and the universe as a whole. It examines everything beyond Earth’s atmosphere, including the Sun, Moon, planets, stars, galaxies, nebulae, comets, asteroids, black holes, and the large-scale structure of the cosmos.

News | Astronomy.com
Your destination for the latest astronomy news on planets, stars, galaxies, cosmology, observing events, space missions, and more.

Portal: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. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.