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Based on strict dictionary definitions, "astronomy" refers to "the study of objects and matter outside the Earth's atmosphere and of their physical and chemical properties", while "astrophysics" refers to the branch of astronomy dealing with "the behavior, physical properties, and dynamic processes of celestial objects and phenomena".
Jun 17, 2024 · Learn about astronomy, the science of studying all extraterrestrial objects and phenomena, from the solar system to the universe. Explore the history, methods, and achievements of astronomy, as well as its challenges and limitations.
Jul 25, 2023 · All astronomy is the study of different wavelengths of the electromagnetic spectrum, which comprises radio, microwave, infrared, visible, ultraviolet, X-ray and gamma rays. To get the full...
Learn the basics of astronomy, the study of everything in the universe beyond Earth's atmosphere. Discover the big ideas of astronomy, such as patterns, distances, motion, gravity, light, and invisible stuff.
4 days ago · Learn about the latest space news, observing tips, and telescope reviews from the world's best-selling astronomy magazine. Explore the sky, see stunning photos, and discover the wonders of the cosmos with Astronomy.com.
Learn about the ocean worlds in our solar system and beyond, and how NASA is searching for life beyond Earth. Explore Europa, Titan, and other moons with missions, images, and stories.
Astronomy Facts: Building Your Background. Even though you don't need to know the Greek names of the constellations or understand the nature of black holes in order to relish the night sky, you might want to anyway. We provide a rich supply of information and resources on astronomy for beginners.
