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  1. 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 …

  2. Astronomy Magazine: Space News, Observing, Planets, Galaxies

    Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes ...

  3. Astronomy | Definition, History, Discoveries, & Facts ...

    Nov 14, 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 …

  4. 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 . …

  5. Astronomy: Everything you need to know | Space

    Jul 25, 2023 · Astronomy was born out of humankind's ancient fascination with the star-studded sky. When you purchase through links on our site, we may earn an affiliate commission. …

  6. Astronomy for Beginners | Night Sky Facts, FAQs & Resources

    Ever look up at the night sky and wonder what you're looking at? In this "Astronomy for Beginners" resource page, find out what's up there tonight.

  7. Astronomy - Science News

    2 days ago · Astronomy Astronomers saw a rogue planet going through a rapid growth spurt The growth spurt hints that the free-floating object evolves like a star, providing clues about rogue …

  8. Astronomy Picture of the Day

    A different astronomy and space science related image is featured each day, along with a brief explanation.

  9. Astronomy News - Space News, Exploration News, Earth Science ...

    The latest science news on astronomy, space, and astrophysics.

  10. Astronomy 101: The Basics of Learning Astronomy - ThoughtCo

    May 6, 2025 · Astronomy is the study of the universe, starting with stargazing and observing celestial bodies. Professional astronomers study stars, planets, and galaxies to understand the …