Ch. 1 Introduction - Astronomy 2e - OpenStax
网页1.1 The Nature of Astronomy. 1.2 The Nature of Science. 1.3 The Laws of Nature. 1.4 Numbers in Astronomy. 1.5 Consequences of Light Travel Time. 1.6 A Tour of the Universe. 1.7 The Universe on the Large Scale. 1.8 The Universe of the Very Small. 1.9 A Conclusion and a Beginning.
Astronomy | Definition, History, Discoveries, & Facts
网页Astronomy is the study of objects and phenomena beyond Earth, whereas cosmology is a branch of astronomy that studies the origin of the universe and how it has evolved.
Introduction to Astronomy | Physics | MIT OpenCourseWare
网页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 astronomical observations and models.
What is Astronomy? | AMNH - American Museum of Natural History
网页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. It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.
Introduction to Astronomy: Crash Course Astronomy #1
网页Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait.
Astronomy 101: The Basics of Learning Astronomy - ThoughtCo
网页2019年7月3日 · Learn the basics of astronomy and how it helps scientists understand everything from planets and moons to galaxies and the structure of the universe.
Astronomy - Wikipedia
网页Astronomy 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.