Welcome to Astronomy, an OpenStax resource. This textbook was written to increase student access to high-quality learning materials, maintaining highest standards of academic rigor at little to no cost.
Just the Facts: Astronomy Essentials examines the complexity and power of our vast universe. How do we know how old the universe is? How large is our galaxy, and how does the Sun provide energy to planet Earth? This series will answer these questions and more!
Titles in this series:
How Do Telescopes Work? In this program, you will learn about the history of the telescope, the modern-day telescope, and how telescopes work. Topics include: refracting telescopes, large telescopes, the job of modern-day telescopes, the Milky Way, black holes, and the beginning of the Universe.
The Solar System: The Solar System is approximately five billion years old, but how did it begin? This program covers the basic theories of origins of the Solar System. Topics include: planets of the Solar System, satellites, future of the Solar System, evolution of the sun, mass of the Solar System, and other galaxies.
The Sun, Source of Energy and Life: The Sun is one of the billions of stars found in our galaxy. In this program, you’ll learn about the physical characteristics of the Sun: size, distance, mass, temperature. We will also cover helium atoms, nuclear fusion, the ocean, the Sun as a source of energy, and more!
What Are Comets?: In ancient days, comets were considered to be harbingers of ill-fortune. Today, comets provide possible answers about the origins of our Solar System. In this program, you’ll learn about the composition of comets, their structure, and their behavior patterns in the Solar System. We’ll also discuss the orbits of comets, their origins and evolution, and one of the most famous comets of all: Halley’s Comet.
What Are Stars?: The Milky Way is made up of approximately 15 billion stars. What are stars, and how are they formed? This program will discuss that and more, including our most famous star: the Sun. We’ll also learn about the planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
2015 marked the 25th anniversary year of the launch of the Hubble Space Telescope, an event that has propelled us into the Golden Age of Astronomy and brought us closer than ever to answering the most perplexing questions—what are the origins of the universe? And are there other worlds like our own, rich with life? The Age of Hubble is gripping, high-end space programming at its best and essential viewing for space enthusiasts of all ages.