"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 …

Dec 19, 2025 · Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Since the late 19th century, astronomy has expanded to include astrophysics, the …

Astronomy is a branch of science that researches everything in the universe beyond our Earth's atmosphere. This includes things like other planets in our solar system, moons, stars, and even …

2 days ago · Your daily source for space and astronomy news. Expert coverage of NASA missions, rocket launches, space exploration, exoplanets, and the latest discoveries in astrophysics.

Get the latest space exploration, innovation and astronomy news. Space.com celebrates humanity's ongoing expansion across the final frontier.

Dec 22, 2025 · Astronomy coverage from Scientific American, featuring news and articles about advances in the field.

Explore the universe with Sky & Telescope - your ultimate source for stargazing, celestial events, and the latest astronomy news.