【NASA每日一图20131021】从卡西尼探测器上俯瞰土星
本帖最后由 eurekahmily 于 2013-10-30 10:59 编辑高清大图下载（4000 × 3200 pixels）
http://apod.nasa.gov/apod/image/ ... ic_cassini_4000.jpg
Saturn from Above
Image Credit & License: NASA/JPL/SSI; Composition: Gordan Ugarkovic
Explanation: This image of Saturn could not have been taken from Earth. No Earth based picture could possibly view the night side of Saturn and the corresponding shadow cast across Saturn's rings. Since Earth is much closer to the Sun than Saturn, only the day side of the ringed planet is visible from the Earth. In fact, this image mosaic was taken earlier this month by the robotic Cassini spacecraft now orbiting Saturn. The beautiful rings of Saturn are seen in full expanse, while cloud details are visible including the polar hexagon surrounding the north pole, and an extended light-colored storm system.
来源：http://apod.nasa.gov/apod/ap131021.html
这张土星照片从地球上是拍不到的，因为从地球角度，不可能拍摄到土星黑夜的一面，更不可能看到阴影投射到土星环上。由于地球比土星离太阳近的多，所以我们只能看到土星白天那一面。这张图片是本月早些时候由卡西尼探测器在土星轨道上拍摄的，展示了美丽的木星环的全景，同时还可以看到土星云层的细节：包括北极的六边形云、以及绵延伸展，颜色略淡的风暴系统。
本帖最后由 lygg 于 2013-10-30 10:40 编辑
壮观,不过图片只有600K{:soso_e141:} lygg 发表于 2013-10-30 10:38 static/image/common/back.gif
壮观,不过图片只有600K
当下载速度达到600K的时候说明带宽有6M，就按带宽算吧{:soso_e141:}
lygg 发表于 2013-10-30 10:38 static/image/common/back.gif
壮观,不过图片只有600K
数错了，是600k，不是6M{:soso_e127:}
不错的清晰大图，希望这张图不要被3无奸商拿去骗新手:P 这是离了多远拍的啊~又震撼又漂亮
页:
[1]