Astronomy Picture of the Day

Explanation: Looking down on the Northern Hemisphere of Mars on June 1, the Mars Global Surveyor spacecraft's wide angle camera recorded this morning image of the red planet. Mars Global Surveyor's orbit is now oriented to view the planet's surface during the morning hours and the night/day shadow boundary or terminator arcs across the left side of the picture. Two large volcanos, Olympus Mons (left of center) and Ascraeus Mons (lower right) peer upward through seasonal haze and water-ice clouds of the Northern Martian Winter. The color image was synthesized from red and blue band pictures and only approximates a "true color" picture of the Mars.

在6月1日俯視火星的北半球之時，火星全球勘測者號太空船的廣角相機，記錄了這幅顆火星的早晨影像。 火星全球勘測者號的觀測方向配置，目前是在早晨觀看火星的表面，而在這幅影像裡，夜/晝的邊界或明暗交線劃過左側。 相機的視線穿過火星季節性的霧霾和火星北半部冬季的水冰雲，眺望二座大火山 - 奧林帕斯山（中左）和阿斯克雷烏斯山（右下）。 這張彩色影像是由紅色和藍色波段的照片組合而成的，所以只是近似火星 "真色彩 "的影像。