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_Astronomy版 - Astronomy Picture of Day: Planet Sedna?
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Astronomy Picture of Day: Voyagers' MessageAstronomy Picture of Day: Red Saturn
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Astronomy Picture of Day: Rocket Trail at SunsetAstronomy Picture of Day: Eclipse in the Mist
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Astronomy Picture of Day: Opportunity's Horizon海王星 Neptune
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话题: sedna话题: astronomy话题: picture话题: day话题: planet
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发帖数: 1994
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Sedna of the Outer Solar System
Illustration Credit: R. Hurt (SSC-Caltech), JPL-Caltech, NASA
Explanation: What is the most distant known object in our Solar System? A new answer to this centuries-old question was announced yesterday by NASA with the discovery of a dark red object dubbed Sedna. Although over twice the distance to Pluto, Sedna is
near its closest approach to the Sun. Sedna's highly elliptical orbit will further displace it by 10 times, making it a candidate for the long-hypothesi
1 (共1页)
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海王星 NeptuneAstronomy Picture of Day: Venus: Just passing by
Astronomy Picture of Day: Gullies on MarsAstronomy Picture of Day: Io under construction
Astronomy Picture of Day: SaturnAstronomy Picture of Day: the Mineral Moon
Astronomy Picture of Day: Asteroid AnnefrankAstronomy Picture of Day: Opportunity's Horizon
Astronomy Picture of Day: Voyagers' MessageAstronomy Picture of Day: Red Saturn
Astronomy Picture of Day: Titan's HazeAstronomy Picture of Day: Dust and Helix Nebula
Astronomy Picture of Day: Astroid 1998KY26Sedna
Astronomy Picture of Day: Rocket Trail at SunsetAstronomy Picture of Day: Eclipse in the Mist
相关话题的讨论汇总
话题: sedna话题: astronomy话题: picture话题: day话题: planet