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Crash Course Astronomy
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.
Koha e ekzekutimit: 12:14 minuta
Cilësia: HD
Data e parë e ajrit: Jan 15, 2015
Data e fundit e ajrit: Dec 24, 2015
Episodi: 46 Episodi
Sezoni: 1 Sezoni
Fjalen : astronomy
Episodi
