Astronomy - Wikipedia
WEBAstronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.
Astronomy | Definition, History, Discoveries, & Facts | Britannica
WEBJul 26, 2024 · 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.
Solar System Exploration - NASA Science
WEBThe solar system has one star, eight planets, five officially named dwarf planets, hundreds of moons, thousands of comets, and more than a million asteroids. Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms.
Astronomy: Everything you need to know | Space
WEBJul 25, 2023 · Astronomy is one of the oldest scientific disciplines that has evolved from the humble beginnings of counting stars and charting constellations with the naked eye to the impressive...
NASA Astrophysics - NASA Science
WEBThe universe is everything. It includes all of space, matter, energy, time, and you. NASA’s Astrophysics Division is dedicated to exploring the universe, pushing the boundaries of what is known of the cosmos, and sharing its discoveries with the world.
Stars - NASA Science
WEBStar Basics. Contents. Birth. Life. Death. Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun.
Astronomy Magazine: Space News, Observing, Planets, Galaxies
WEB1 day ago · Each issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more!
Nature Astronomy
WEBJul 15, 2024 · Nature Astronomy publishes research, reviews and commentary of the highest quality in all areas of astronomy, astrophysics, planetary sciences.
Astronomy and planetary science - Latest research and news
WEBAug 20, 2024 · Astronomy and planetary science are the study of objects and phenomena that occur beyond the Earth’s atmosphere. This includes investigating stars and their interaction with...
What is Astronomy? | AMNH - American Museum of Natural History
WEBAstronomy 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.