The planet's gravitational pull slowed the spacecraft by 8,000 kilometers per hour for its eventual descent into orbit around Mercury in 2011.
由于星球引力的作用,会使太空飞船在2011年最终下降到水星轨道周围时的速度降为8000公里/小时。
Rising on March 19, its exact full phase occurred within an hour of perigee, the closest point in the Moon's orbit to Earth.
3月19日那天的月亮,它最圆的相位发生在月球运行到近地点(月球轨道距离地球最近)附近一个小时以内的时间内。
Traveling at 17, 500 miles per hour (5 miles per second)…we orbit the Earth every 90 minutes, with a sunrise or sunset every 45 minutes.
以时速17500英里/小时(5英里/秒)飞行,每90分钟我们就绕地球飞行一圈,就是说每45分钟就日升或日落一次。
Israel's first 24-hour, all-weather, high-resolution radar satellite, dubbed TechSAR, was inserted into orbit Jan. 21 by an Indian Polar satellite Launch Vehicle (PSLV).
2008年1月21日,以色列的首颗24小时、全天候、高分辨率雷达卫星TechSAR由印度的极轨卫星运载火箭(PSLV)送入轨道。
The US space agency said it took about an hour for the space telescope to leave the rocket and got to its final orbit around the sun.
美国太空局表示开普勒将用一个小时的时间与火箭分离进入她最终围绕太阳运行的轨道。
Rotation is likely to return to a 24 hour day, or close to this, and the Earth's orbit close to her prior period of 365 days in a year.
旋转很可能会恢复到一天24小时,或是接近这个数,而且地球的轨道也接近于之前的1年365天。
Rotation is likely to return to a 24 hour day, or close to this, and the Earth's orbit close to her prior period of 365 days in a year.
旋转很可能会恢复到一天24小时,或是接近这个数,而且地球的轨道也接近于之前的1年365天。
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