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Crash Course Astronomy

Exoplanets: Crash Course Astronomy #27

Video duration: 11:49

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.

Episodes of Crash Course Astronomy41

Video thumbnail: Crash Course Astronomy Dark Matter: Crash Course Astronomy #41

Crash Course Astronomy

Dark Matter: Crash Course Astronomy #41

Today on Crash Course Astronomy, Phil dives into some very dark matters.

11:45

Dark Matter: Crash Course Astronomy #41

11:45

Video thumbnail: Crash Course Astronomy Gamma-Ray Bursts: Crash Course Astronomy #40

Crash Course Astronomy

Gamma-Ray Bursts: Crash Course Astronomy #40

The discovery of gamma-ray bursts is an epic story.

13:51

Gamma-Ray Bursts: Crash Course Astronomy #40

13:51

Video thumbnail: Crash Course Astronomy Galaxies, part 2: Crash Course Astronomy #39

Crash Course Astronomy

Galaxies, part 2: Crash Course Astronomy #39

Active galaxies pour out lots of energy.

15:20

Galaxies, part 2: Crash Course Astronomy #39

15:20

Video thumbnail: Crash Course Astronomy Galaxies, part 1: Crash Course Astronomy #38

Crash Course Astronomy

Galaxies, part 1: Crash Course Astronomy #38

Galaxies contain gas, dust, and billions of stars or more.

11:51

Galaxies, part 1: Crash Course Astronomy #38

11:51

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