It was a giant leap suddenly to argue that the Earth orbits the sun, rather than the other way around, particularly without telescopes.

要知道当时尤其是在没有望远镜的情况下，突然声称地球围绕太阳运动而非相反是多么巨大的飞跃。

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In fact they must release energy in that way in order to degrade their orbits and get close enough to merge. Those gravitational waves could act sort of like a jet engine, explained Jonker.

Jonker解释道，“事实上他们必须通过这种方式来释放能量，降低轨道，彼此靠近并最终融合，这些重力波能产生类似喷气发动机的效果。”

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Planets in their orbits are swept along by the sweeping arms of the Sun, as we have explained, but when doing so encounter matter in their way - subatomic particles they must plow through.

我们已经解释过了，在自己轨道的各个行星是被太阳“巨大的臂膀”扫过，但此时在途中遇到的问题——必须通过亚原子粒子。

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Various countries also have been formulating new rules or guidelines to assure that before satellites completely lose power and no longer can be controlled, operators will abide by plans to park them in out-of-the-way orbits or safely bring them back to earth.

WSJ: Falling Satellite Debris Might Hit U.S.

An uncompromising exploration of power, ambition and the American way, the series orbits Francis Underwood (Spacey), the House Majority Whip.

ENGADGET: Netflix schedules its original series 'House of Cards' for release February 1st