Open Education Resources (OER)

" This Wikibook introduces the reader to that tapestry and the process that revealed it to humanity. It presents astronomy not only as a field of knowledge, but also as a human endeavor in science."

"Astronomy is designed to meet the scope and sequence requirements of one- or two-semester introductory astronomy courses. The book begins with relevant scientific fundamentals and progresses through an exploration of the solar system, stars, galaxies and cosmology."

An exploration of our planetary solar system: The Sun, planets, moons, and millions of asteroids, and comets.

"NASA Solve lists opportunities available to the general public to contribute to solving tough problems related to NASA’s mission through challenges, prize competitions, and crowdsourcing activities."

"The Clearinghouse provides a way for astronomy educators to share assignments, activities, and teaching tips. This material is made available under a Creative Commons license that allows you to adapt it as you like, as long as you credit the authors and use it for non-commercial purposes. You may share your adaptation, but only under a similar license. If the original authors are unknown, please credit the "UW Astronomy Clearinghouse"

"This course provides an introduction to the universe beyond the Earth. We begin with a study
of the night sky and the history of the science of astronomy." From Open Source Library

"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." From MIT Open Course

Search for images in the following galleries:
New Horizons at Pluto
International Space Station
Mars Missions
Orion Spacecraft
Space Launch System
Earth Missions
Hubble Space Telescope
Spitzer Space Telescope
Cassini at Saturn
James Webb Space Telescope

"The New Horizons mission is helping us understand worlds at the edge of our solar system by making the first reconnaissance of the dwarf planet Pluto and by venturing deeper into the distant, mysterious Kuiper Belt – a relic of solar system formation"

"This is a growing collection of animations (primarily 3-D) animations of concepts, principles and processes in introductory physics and conceptual astronomy."

We need your help to discover the birthplace of planets in never-before seen data!