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Crash Course Astronomy

The Sun: Crash Course Astronomy #10

Phil takes us for a closer (eye safe!) look at the two-octillion ton star that rules our solar system. We look at the sun's core, plasma, magnetic fields, sunspots, solar flares, coronal mass ejections, and what all of that means for our planet.

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Full Episodes
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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.
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Episode
15:00
Crash Course Astronomy

Deep Time: Crash Course Astronomy #45

Our Universe’s days are numbered.
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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.
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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.
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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!
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Episode
11:45
Crash Course Astronomy

Dark Matter: Crash Course Astronomy #41

Today on Crash Course Astronomy, Phil dives into some very dark matters.
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Episode
13:51
Crash Course Astronomy

Gamma-Ray Bursts: Crash Course Astronomy #40

The discovery of gamma-ray bursts is an epic story.
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Episode
15:20
Crash Course Astronomy

Galaxies, part 2: Crash Course Astronomy #39

Active galaxies pour out lots of energy.
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Episode
11:51
Crash Course Astronomy

Galaxies, part 1: Crash Course Astronomy #38

Galaxies contain gas, dust, and billions of stars or more.
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Episode
10:59
Crash Course Astronomy

The Milky Way: Crash Course Astronomy #37

Today we’re talking about our galactic neighborhood: The Milky Way.
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