Astronomy Picture of Day: Venus: Just passing by - _Astronomy版

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_Astronomy版 - Astronomy Picture of Day: Venus: Just passing by

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话题: venus话题: just话题: passing话题: day话题: astronomy

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发帖数: 1994

Venus: Just Passing By
Credit: Galileo Project, JPL, NASA
Explanation: Venus, the second closest planet to the Sun, is a popular way-point for
spacecraft headed for the gas giant planets in the outer reaches of the solar system. Why
visit Venus first? Using a "gravity assist " maneuver, spacecraft can swing by planets and
gain energy during their brief encounter saving fuel for use at the end of their long
interplanetary voyage. This colorized image of Venus was recorded by th

(共1页)

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● Astronomy Picture of Day: Titan's Haze	● Astronomy Picture of Day: Dust and Helix Nebula

相关话题的讨论汇总
话题: venus话题: just话题: passing话题: day话题: astronomy

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