Explore The Solar System: 360 Degree Interactive Tour! In 46 episodes, Phil Plait (aka The Bad Astronomer) teaches you astronomy! This course's content is loosely based on an introductory …

Join host Phil Plait in a Crash Course about the cosmos.

Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: …

Join host Phil Plait and discover everything there is to know about the cosmos. Phil gives the course a send off with a look at some of his favorite topics. Our Universe’s days are …

This course starts with the astronomical observations we can make with the naked eye and expands out to cover the solar system, stars, galaxies, and the universe itself.

Episode 44, Season 1 A Brief History of the Universe: Crash Course Astronomy #44 Thanks to the wonders of physics, we can map a timeline of the universe’s history.

The use of Crash Course materials does not imply endorsement by Crash Course or PBS. --- Material created by SciHigg (Justin Higgins) uses Creative Commons, GNU free, Public …

In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the system of planets and other …

Oct 29, 2015 · Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular. Galaxies can collide, and grow in size by …

In order to understand how we study the universe, we need to talk a little bit about light. Light is a form of energy. Its wavelength tells us its energy and color. Spectroscopy allows us to...