Science fiction writers have long dreamed that humans might one day quit the earth to colonize other planets.
科幻小说作家们长期以来一直梦想着人类有一天可以离开地球移居到其它星球上。
The planets revolve around the sun.
行星绕着太阳运转。
Since the earliest times, people have looked up at the stars, the moon and the planets.
自人类诞生之初起，人们就仰望星星、月亮和行星。
Aristarchus recognized from his calculations that the Sun was much larger than the Earth and other planets.
阿利斯塔克从他的计算中认识到，太阳比地球和其他行星要大得多。
These asteroids are like the terrestrial planets, in that they're composed mostly of rocky material and metals.
这些小行星像类地行星一样，主要由岩石物质和金属构成。
The collisions quickly depleted all the anti-matter and left just enough matter to create stars, planets, and eventually us.
碰撞很快耗尽了所有的反物质，只留下足够的物质，来创造恒星、行星和最终的我们。
There may be giant plankton on gaseous planets. They float in a thick atmosphere like small spaceships and live by "eating" lightning.
气态星球上可能存在巨型浮游生物。它们像小型飞船那样漂在厚厚的大气中，靠“吃”闪电获取能量为生。
Of course, we now know that the planets, including Earth, revolve around the Sun, and that the solar system is only a tiny part of the universe.
当然，我们现在知道，包括地球在内的行星都围绕太阳公转，而太阳系只是宇宙的一小部分。
Moving on through the asteroid belt we enter the realms of the gas giant planets: Jupiter, Saturn, Uranus, and Neptune, all of which dwarf the Earth.
穿过小行星带继续前进，我们进入了气体巨行星区域：木星、土星、天王星、海王星，所有这些都使地球看起来像个侏儒。
Geocentric means Earth-centered, so the geocentric view holds that the Sun, the planets, and the stars, all revolve around the Earth, which is stationary.
地心论是指以地球为中心，所以地心论认为，太阳、行星和恒星都围绕着地球旋转，而地球是静止的。
An estimated 99.85 percent of the mass of our solar system is contained within the Sun, while the planets collectively make up most of the remaining 0.15 percent.
太阳占据了太阳系总质量的大约99.85%，而在剩余的0.15%中，行星占据了大部分。
Massive projectiles striking much larger bodies create various kinds of craters, including multi-ring basins—the largest geologic features observed on planets and moons.
巨大的抛射物撞击更大的天体，创造了各种各样的陨石坑，包括多环盆地——这是在行星和卫星上观察到的最大的地质特征。
Copernicus theorized in 1543 that all of the planets that we knew of revolved not around the Earth, but the Sun, a system that was later upheld by Galileo at his own expense.
哥白尼在1543年提出了一个理论，即我们所知道的所有行星不是绕着地球转，而是绕着太阳转的，这一理论后来得到了伽利略的支持，但伽利略本人也为此付出了代价。
Scientists have launched many spaceships to explore other planets in the solar system.
科学家们已经发射了很多宇宙飞船去探索太阳系的其他行星。
In the future, we might see cities on the moon or even new human cultures on other planets.
未来，我们可能会在月球上看到城市，甚至在其他行星上看到新的人类文化。
New planets are still being found.
新的行星正在不断被发现。
Don't blow it - good planets are hard to find.
别摧毁它——好的星球是很难找到的！
Isotopes Say New Origin Stories for Some planets.
听同位素讲述行星起源的故事。
Some day we ourselves may travel to other planets.
也许某一天人类能够踏上其他星球的土地。
Time to start giving extrasolar planets proper names
该替太阳系之外的行星适当取名了
It would take the first pictures of Earth-like planets.
它要拍摄第一批类地行星的图片。
It will also help with the search for extrasolar planets.
它还能帮助寻找太阳系以外的行星。
Powerful telescopes allow scientists to study the planets.
强大的望远镜使科学家能够研究行星。
The telescope should find at least 50 Earth-sized planets.
开普勒号预计将发现至少50颗与地球大小相仿的行星。
The planets are being little gremlins this month, dear Aries.
亲爱的白羊们，这个月的行星有点像小捣蛋鬼。
The planets are being little gremlins this month, dear Aries.
亲爱的白羊们，这个月的行星有点像小捣蛋鬼。
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