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Crash Course Astronomy

Exoplanets: Crash Course Astronomy #27

Season 1 Episode 27

Phil explains that YES, there are other planets out there and astonomers have a lot of methods for detecting them. Nearly 2000 have been found so far. Exoplanets appear to orbit nearly every kind of star, and weÕve even found planets that are the same size as Earth. We think there may be many billions of Earth-like planets in our galaxy.

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Full Episodes
Life in the Universe: Crash Course Astronomy #46
Episode
11:09
Crash Course Astronomy

Life in the Universe: Crash Course Astronomy #46

Phil gives the course a send off with a look at some of his favorite topics.
Season 1 Episode 46
Deep Time: Crash Course Astronomy #45
Episode
15:00
Crash Course Astronomy

Deep Time: Crash Course Astronomy #45

Our Universe’s days are numbered.
Season 1 Episode 45
A Brief History of the Universe: Crash Course Astronomy #44
Episode
12:21
Crash Course Astronomy

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.
Season 1 Episode 44
Dark Energy, Cosmology part 2: Crash Course Astronomy #43
Episode
11:08
Crash Course Astronomy

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.
Season 1 Episode 43
The Big Bang, Cosmology part 1: Crash Course Astronomy #42
Episode
13:09
Crash Course Astronomy

The Big Bang, Cosmology part 1: Crash Course Astronomy #42

Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING!
Season 1 Episode 42
Dark Matter: Crash Course Astronomy #41
Episode
11:45
Crash Course Astronomy

Dark Matter: Crash Course Astronomy #41

Today on Crash Course Astronomy, Phil dives into some very dark matters.
Season 1 Episode 41