Episode 38 | 11m 51s
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 eating each other.
Aired: 05/08/16
Galaxies, part 1: Crash Course Astronomy #38
Life in the Universe: Crash Course Astronomy #46
Phil gives the course a send off with a look at some of his favorite topics.
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.
Dark Energy, Cosmology part 2: Crash Course Astronomy #43
Most of the universe is made up of a mysterious entity that pervades space: dark energy.
The Big Bang, Cosmology part 1: Crash Course Astronomy #42
Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING!
Dark Matter: Crash Course Astronomy #41
Today on Crash Course Astronomy, Phil dives into some very dark matters.
Gamma-Ray Bursts: Crash Course Astronomy #40
The discovery of gamma-ray bursts is an epic story.
Galaxies, part 2: Crash Course Astronomy #39
Active galaxies pour out lots of energy.
Now Showing
Galaxies, part 1: Crash Course Astronomy #38
Galaxies contain gas, dust, and billions of stars or more.
The Milky Way: Crash Course Astronomy #37
Today we’re talking about our galactic neighborhood: The Milky Way.
Nebulae: Crash Course Astronomy #36
Astronomers study a lot of things, but nebulae might be the most beautiful of them all.
Star Clusters: Crash Course Astronomy #35
Last week we covered multiple star systems, but what if we added thousands to the mix?
