
Ch. 1 Introduction - Astronomy 2e | OpenStax
This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.
Introduction to Astronomy | Physics | MIT OpenCourseWare
Introduction to Astronomy provides a quantitative introduction to the physics of the solar system, stars, the interstellar medium, the galaxy, and the universe, as determined from a variety of …
Astronomy 101: The Basics of Learning Astronomy - ThoughtCo
May 6, 2025 · Learn the basics of astronomy and how it helps scientists understand everything from planets and moons to galaxies and the structure of the universe.
Introduction to Astronomy (Lumen) - Physics LibreTexts
This textbook offers a broad introduction to astronomy, covering the structure and scale of the universe, the history of astronomical discovery, the motions of celestial bodies, light and …
Astronomy | Definition, History, Discoveries, & Facts | Britannica
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 …
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 .
Introduction to Astronomy
Nov 26, 2021 · In the following chapters you will learn how astronomers measure the distances, sizes, and ages of these objects and determine what they are like and what makes them …
Module Introduction – Introduction to Astronomy
Astronomy is a passion for many and today is a mainstream hobby, as in years past. Introduction to Astronomy will provide you with an opportunity to explore both the significant historical …
Astronomy for Beginners - The Planetary Society
Here are a few tips to get you started with astronomy for beginners, and some ways to deepen your connection to the cosmos. Some locations are better than others for stargazing, but you …
Introduction to Astronomy | Department of Astronomy | Illinois
Introduces the student to the basic concepts of modern astronomy.