Giant World Orbiting Red Dwarf Star Gliese 876 (Illustration) : 無料・フリー素材/写真
Giant World Orbiting Red Dwarf Star Gliese 876 (Illustration) / NASA Hubble
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | This is an artist's concept of a gas giant planet orbiting the cool, red dwarf star Gliese 876, located 15 light-years from Earth. The planet was discovered with ground-based telescopes in 1998. Hubble Space Telescope measurements of the star's wobble, caused by the gravitational tug of the planet, firmly establish the planet's mass as being no more than approximately twice that of Jupiter's. The planet is only one-fifth the distance from its star as Earth is from the Sun.Though it is too far away to be photographed by present-day telescopes, the planet is presumably a gas giant world that might be encircled by moons, as imagined in this illustration. Gliese 876 also has an inner planet with a mass only half that of Jupiter's, as estimated by earlier ground-based observations. The inner gas planet in the system appears in this illustration as a bright star-like object near the red dwarf. For more information, visit: hubblesite.org/contents/news-releases/2002/news-2002-27.htmlCredit: NASA and G. Bacon (STScI) |
| 撮影日 | 2019-09-27 14:10:37 |
| 撮影者 | NASA Hubble |
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