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It is probably easier to make an analogy between the courses of the planets, and two trains travelling in the same direction.将行星的运行比作两列火车朝同一方向行驶可能更容易些。Scientists are still unsure about the possibility of life on other planets.科学家们仍不确定其他星球上是否可能存在生命。I have always doubted the existence of life on other planets.我一直对外星生物的存在持有怀疑。There is no positive proof that life exists on other planets.没有确凿证据证明其他星球上存在生命。We can't simply point a telescope at a star and see its orbiting planets directly.只是简单地把望远镜对准一颗恒星，并不能直接看到它的轨道行星。Once they'd been pointed out for me, I had no trouble identifying the major stars and planets.对于一些大的恒星和行星，只要有人指给我看过，我就不难找出它们的位置。Students learned to approximate the distance between the Earth and the planets.学生们学会了估算地球与行星之间的大概距离。By convention, planets are named after Roman gods.根据惯例，行星是以罗马神话中诸神的名字命名的。The question of whether life exists on other planets preoccupied the boy's mind.那男孩心中老是想著其他星球上是否存在生命这一问题。The planets rotate around the sun.行星绕太阳公转。Scientists are looking for evidence of life on other planets.科学家们正在寻找其他行星上的生命迹象。The more distant outer planets retrograde more frequently.带外行星距离越远，向后移动越频繁。We are now beginning to believe that there may be life on other planets.我们现在开始相信其他行星上可能有生物。How many planets orbit the sun?有多少颗行星绕着太阳转？Gravity is the force that makes the planets move around the sun.引力是使行星绕太阳公转的力。Will we ever find intelligent life on other planets?我们能在其他星球上发现智能生物吗？The US is in the van of the quest to establish contact with other planets.美国在探索与外层空间生物建立联系方面处于领先地位。All planets travel in the same direction.所有行星都朝同一方向运行。There is no evidence that life exists on other planets.没有证据表明其他行星上有生命存在。Given the sheer number of stars that exist it's a mathematical certainty that there is life on other planets.仅凭现有星体的数量，从数学的角度来讲，其他星球上肯定也存在生命。The planets move around the sun.行星绕著太阳转。The planets have different atmospheres.这些行星有不同的大气层。Only two of the planets could sustain life.只有两颗行星具备使生命存活下去的条件。Herschel was firmly convinced of the possibility of life on other planets.赫歇尔坚信在其他行星上可能存在生命。It is possible that life exists on other planets.其他星球上也可能有生命存在。We see the stars and planets as tiny points of light.我们看来恒星和行星就是一个个小亮点。The newly discovered planets around distant stars are similar to Jupiter in size.远处星球附近新发现的一些行星和木星差不多大小。Mercury, Venus, Earth, and Mars are called "rocky planets".水星、金星、地球和火星被称为“岩石行星”。Is there life on other planets?其他行星上有生命吗？All the planets orbit the Sun in roughly the same plane, round its equator.所有的行星大致在同一平面上绕太阳赤道运转。The sun and the planets are heavenly bodies.太阳和行星都是天体。As a planet, the moon has a higher luminosity than most other planets.作为一个星球，月亮的光度非常高。The discovery of planets orbiting other suns has profound implications.行星环绕其他恒星的轨道运行的发现具有深远的影响。Light passes from the sun to the planets.光从太阳射到行星。Travel to other planets may soon be possible.去其他行星旅行也许很快就会成为可能。Its rings were discovered by telescope from Earth, but space probes later found that spectacular rings surround some other planets.它的圆环是从地球上用望远镜发现的，但是太空探测器后来又发现了围绕其他一些星球的壮观的圆环。There has always been a lot of interest in the question of life on other planets.人们对其他星球上是否有生命的问题总是深感兴趣。The idea that there is life on other planets is the central premise of the novel.其他星球存在生命这一观点是这部小说的主要前提。Mercury is the smallest of all the planets.水星是行星中最小的一颗。He developed a mathematical formula describing the distances of the planets from the Sun.他提出了一个表述行星到太阳距离的数学公式。 |