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词汇 Astronomical transit
分类 英语词汇 英语翻译词典
释义

Astronomical transit

中文百科

凌 (天体)

太空船STEREO B在调整期间，以紫外线拍摄到的月球凌日影像。由于太空船至月球的距离比地球远了许多倍，因此月球远比在地球上看见的小许多。
从地球看见的木卫一凌木星的仿真。在木星的表面可以看见木卫一的影子，由于不是和太阳与地球在同一条在线，影子略为在木卫一的前方前进。
从卡西尼-惠更斯号太空船观察到的埃欧凌木星。
从卡西尼-惠更斯号太空船观察到的迪奥凌泰坦。背景是被土星环掩蔽的小卫星普罗米修斯。

凌，或明确的说是天体的凌，在天文学上有三种意义：

这篇文章介绍的是第一种的凌。

英语百科

Transit (astronomy) 凌 (天体)

A lunar transit of the sun captured during calibration of the STEREO B spacecraft's ultraviolet imaging . The Moon appears much smaller than it does seen from Earth, because the spacecraft-Moon separation was several times greater than the Earth-Moon distance.
A simulation of Io transiting Jupiter as seen from the Earth in February 2009. Io's shadow is seen on the surface of Jupiter, leading Io slightly due to the sun and Earth not being in the same line.
Io transits across Jupiter as seen by Cassini spacecraft
Dione transits Titan, as seen by the Cassini probe; in the background, little Prometheus is occulted by the rings of Saturn

The term transit or astronomical transit has three meanings in astronomy:

The rest of this article refers to the first kind of transit.

On December 21, 2012, the Cassini-Huygens probe, in orbit around Saturn, observed the planet Venus transiting the Sun.
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