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The Solar System Family Portrait is an image of the Solar System acquired by MESSENGER during November 2010 from approximately the orbit of Mercury. The mosaic is intended to be complementary to the "Voyager Family Portrait" acquired from the outer edge of the Solar System on February 14, 1990. The portrait was constructed using 34 individual frames acquired using the Mercury Dual Imaging System, targeting areas surrounding each planet. The first series of images were acquired on November 3, 2010, and the second on November 16. Six planets are visible in the mosaic. From left to right: Venus, Earth, Jupiter, Mars, Mercury, and Saturn. Uranus and Neptune were too small to resolve at this distance (3.0-billion and 4.4-billion kilometers respectively). Careful effort was taken to avoid facing the camera toward the Sun due to the intense heat at close distance. Several moons are visible in the photo, including the Earth's Moon, and all four Galilean moons: Callisto, Ganymede, Europa, and Io. Additionally, part of the Milky Way is visible between Neptune and Mars. Because MESSENGER does not follow the same orbital plane as the Earth, the cameras on the spacecraft had to point up and down from the ecliptic to capture all of the planets. This resulted in a curved mosaic. ==See also== *Voyager Family Portrait 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Family Portrait (MESSENGER)」の詳細全文を読む スポンサード リンク
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