多年来，牛顿一直对月球和行星绕轨道运行的原因感到好奇。
Newton for years had been curious about the cause of the orbital motion of the moon and planets.
最合理的解释是，我们看到的两颗星在视线侧面绕轨道运行。
The best explanation is that actually two stars were seen orbiting edge-on to our line of sight.
但多年来牛顿一直对月球和行星绕轨道运行的起因好奇不已。
But Newton for years had been curious about the cause of the orbital motion of the moon and planets.
日本天文学家计划联合细微观察星星，因为它能有绕轨道运行，并有生命的痕迹。
Japanese astronomers plan to band together to observe one star in great detail because of hints that it could have an orbiting planet with life.
如果一颗星随着时间的推移变亮和变暗，这可能就是一颗绕轨道运行的行星的迹象。
If a star gets brighter and fainter over time, this could be a sign of an orbiting planet.
用它来观看光谱迹象，即一颗恒星因为受到一颗绕轨道运行的行星的引力而在晃动。
This looks for spectral signs that a star is wobbling due to gravitational tugs from an orbiting planet.
一颗不绕轨道运行的行星在一颗遥远的恒星前面经过时，就会因放大恒星的光而暴露自己。
As the planet passes in front of a distant star-one it isn't orbiting-it gives itself away by magnifying the star's light.
他们正使用地面仪器以及绕轨道运行的仪器如哈勃太空望远镜和斯皮策太空望远镜检查这些候选恒星。
They're checking out the candidates with ground-based instruments as well as orbiting assets like the Hubble Space Telescope and the Spitzer Space Telescope.
你汽车上与绕轨道运行的卫星发出的无线电信号调谐的传感器能随时精确地确定你汽车的方位，并告知交通阻塞情况。
Sensors in your car tuned to radio signals from orbiting satellites can locate your car precisely at any moment and warn of traffic jams.
这颗行星围绕着一颗名为“格里斯876”的恒星运转，该恒星距地球15光年，绕轨道运行一周的时间约为地球上的1.94天。
It is orbiting a star called Gliese 876, 15 light years from Earth, with an orbit time of just 1.94 Earth days.
假如它们相互绕轨道运行得更快一些，譬如说，绕轨道运行一周的时间降为3分钟，那么这一对白矮星就会相互牵引得过于靠近，而开始从另一个中抽取氮气。
If they orbited each other any more quickly, say, on the order of three minutes per orbit, the stars would pull so close that they would begin siphoning helium off one another.
太空轨道技术公司首席执行官谢尔盖•科斯坚科在接受采访时表示，计划中的空间站将是“一座绕轨道运行的舒适酒店，专为游客度身打造。它将比现在的国际空间站更舒适，因为里面不会有任何多余的设备。”
'But it will be more comfortable than the International Space Station because there won't be any unnecessary scientific equipment, ' he said.
当行星绕太阳运行时，其轨道椭圆的主轴每次都会改变。
The main axis of the planet's orbital ellipse shifts each time when it goes around the sun.
米兰科维奇在20世纪早期提出，冰河时代是由地球绕太阳运行轨道的变化引起的。
Milankovitch proposed in the early twentieth century that the ice ages were caused by variations in the Earth's orbit around the Sun.
这一假设认为，地球运行的变化，特别是绕太阳轨道的变化，会导致太阳到达地球能量的不同。
It says that variations in earth's movements, specifically in its orbit around the sun, these variations lead to differences in the amount of solar energy that reaches the earth.
最终会导致其中一个行星输掉这场较量，失去在这个星系中存在的资格，或者被完全开除出绕恒星运行的轨道。
Eventually, one planet loses the battle and winds up in the nether regions of its solar system or kicked out of the parent star's orbital nest entirely.
1975年6月- 10月，俄罗斯金星9号探测器第一个绕金星轨道运行，着陆，拍摄的航天器。
From June to October 1975, Russian space probe Venera 9 became the first craft to orbit, land on, and photograph Venus.
那时月球运行轨道较小，绕我们一周也就需要20天的时间，当时地球上的一天也就只有18个小时。
Its tighter orbit meant it needed just 20 days to go around us. A day on Earth back then was only 18 hours long.
大约每隔两年，地球会在绕太阳运行的轨道上经过火星。
About every two years, however, the Earth passes Mars as they orbit around the Sun.
流星雨是地球在绕太阳运行的轨道上穿过微粒和尘埃团时产生的。
Meteor showers occur when Earth orbits through clouds of particles and dust on its path around the sun.
望远镜能搜寻类似于冥神星那样以偏离太阳系的椭圆轨道平面绕太阳运行的矮星。
The telescope can be used to search for dwarf planets like Pluto that orbit the Sun off the solar system's ecliptic plane.
天文学家们认为这颗新发现的行星的质量至少是木星的1.25倍，它的运行轨道非常贴近其母星，绕其运行一周只需16.2天。
The new planet is thought to have a minimum mass 1.25 times that of Jupiter and circles in close proximity to its parent star, with an orbit lasting just 16.2 days.
为庆祝哈勃望远镜升空并进入绕地轨道运行20周年纪念拍下了这个图片。
The image celebrates the 20th anniversary of Hubble's launch and deployment into an orbit around Earth.
他想弄明白为什么行星会绕太阳做轨道运行。
He wanted to know how it could be that the planets orbited the sun.
绕地球轨道运行的时候，宇航员经常会采集一些图片，有些是日照亮斑，有些是太阳光洒落水面发生镜面反射的效果。
Astronauts orbiting the Earth frequently collect images that include sunglint, or the mirror-like reflection of sunlight off a water surface.
行星绕太阳运行的轨道是近圆形的椭圆，太阳位于每个椭圆中心的附近。
Planets orbit the sun in oval-shaped paths called ellipses, and the sun is slightly off to the side of the center of each ellipse.
两枚将探测太空天气情况的欧洲卫星终于进入绕地球运行轨道，4年前第一次发射时因运载火箭爆炸而失败。
Two European satellites that will study the weather in space are finally orbiting the Earth four years after a first launch attempt ended in disaster when a carrier rocket blew up.
由罗伯特·麦克诺特去年发现，这个绕太阳运行的冰块将在下周经过地球，并将在7月上旬靠近太阳时持续融化，在其轨道上洒下碎屑。
Discovered by Robert McNaught last year, the sun-orbiting iceberg will pass the Earth next week and will continue to melt and shed debris as it closes in on the sun until early July.
1981年4月12日，哥伦比亚号航天飞机从肯尼迪航天中心发射升空，此次旅行指挥长约翰·杨和罗伯特·克里平将绕地球轨道运行37次。
Lift off! Columbia launches from the Kennedy Space Center on April 12, 1981, and orbits the Earth 37 times with commander John Young and pilot Robert crippen.
1981年4月12日，哥伦比亚号航天飞机从肯尼迪航天中心发射升空，此次旅行指挥长约翰·杨和罗伯特·克里平将绕地球轨道运行37次。
Lift off! Columbia launches from the Kennedy Space Center on April 12, 1981, and orbits the Earth 37 times with commander John Young and pilot Robert crippen.
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