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Crash Course Astronomy

Crash Course Astronomy
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Available Formats Crash Course Astronomy Secure Scanned : 09/10/2025
Crash Course Astronomy

Crash Course Astronomy - Season 1 Episode 27

Crash Course Astronomy 2015 -

Overview:Today 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. The most successful method is using transits, where a planet physically passes in front of its parent star, producing a measurable dip in the star’s light. Another is to measuring the Doppler shift in a star’s light due to reflexive motion as the planet orbits. Exoplanets appear to orbit nearly every kind of star, and we’ve 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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First Air Date: Jan 15, 2015 Last Air date: Dec 24, 2015 Season: 1 Season Episode: 46 Episode Runtime: 12:14 minutes Quality: HD IMDb: 3 / 10 by 1 users Popularity: 0.5148 Language: en

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