2008年4月最好的每日图片。闪电的轨迹在背光的烟囱岩石在科罗拉多州西南的圣胡安国家森林。

Photo of the Day: Best of April 2008 Trails of lightning backlight Chimney Rock in southwest Colorado's San Juan National Forest.

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探索宇宙！每日展出一幅不同的有关迷人宇宙的图片，图片附有专业天文学家的简短说明。

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

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中分辨率成像分光辐射度计快速反应小组每日提供两幅南加州的图片。

The MODIS Rapid Response Team provides twice-daily images of southern California.

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