Fail:Kepler 20 - planet lineup.jpg

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Keterangan
English: Earth-class Planets Line Up

This chart compares the first Earth-size planets found around a sun-like star to planets in our own solar system, Earth and Venus. NASA's Kepler mission discovered the new found planets, called Kepler-20e and Kepler-20f. Kepler-20e is slightly smaller than Venus with a radius .87 times that of Earth. Kepler-20f is a bit larger than Earth at 1.03 times the radius of Earth. Venus is very similar in size to Earth, with a radius of .95 times that our planet.

Prior to this discovery, the smallest known planet orbiting a sun-like star was Kepler-10b with a radius of 1.42 that of Earth, which translates to 2.9 times the volume.

Both Kepler-20e and Kepler-20f circle in close to their star, called Kepler-20, with orbital periods of 6.1 and 19.6 days, respectively. Astronomers say the two little planets are rocky like Earth but with scorching temperatures.

There are three other larger, likely gaseous planets also know to circle the same star, known as Kepler-20b, Kepler-20c and Kepler-20d.

For more information about the Kepler mission and to view the digital press kit, visit: http://www.nasa.gov/kepler

Image credit: NASA/Ames/JPL-Caltech
Tarikh
Sumber http://www.nasa.gov/mission_pages/kepler/multimedia/images/kepler-20-planet-lineup.html
Pengarang NASA/Ames/JPL-Caltech
Versi lain Derivative works of this file:  Comparação da Terra com outros planetas.jpg

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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21 Disember 2011

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