从重量为百万分之一克的样品中提取有关行星宏观组成的信息是一个极为有趣的科学尝试实例。
Extracting information about the large-scale composition of a planet from a sample weighing a millionth of a gram was a fascinating example of scientific endeavour.
行星绕着太阳运转。
自人类诞生之初起，人们就仰望星星、月亮和行星。
Since the earliest times, people have looked up at the stars, the moon and the planets.
忘记地球，去拯救一片湿地；忘记行星，去拯救一只青蛙。
凝望天空中的同一颗行星，或草丛中闪烁的同一只萤火虫；
To gaze upon the same planet in space, or at the same glowworm gleaming in the grass;
经过多年的仔细研究，天文学家发现了一颗与地球相似的行星。
After many years of scrutinizing, astronomers have found a planet that is similar to the Earth.
地球是一个岩石行星，这里有液态水，这是生命存在的必要条件。
Earth is a rocky planet where there is liquid water, which is necessary for life to exist.
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。
Aristarchus recognized from his calculations that the Sun was much larger than the Earth and other planets.
就像木星是最大的行星而木星（朱庇特）又是罗马神话中众神之王的名字，对吧？
Like how Jupiter is the biggest planet and how Jupiter was the name of the King of the gods in Roman mythology, right?
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。
The collisions quickly depleted all the anti-matter and left just enough matter to create stars, planets, and eventually us.
狮子座的王者之星轩辕十四和红色行星火星，在这地平线上繁星闪耀的天空中交相辉映。
Leo's royal star Regulus and red planet Mars appear in a colorful pairing just above the horizon in this starry skyscape.
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。
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.
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。
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.
我们的银河系实在庞大，吸引着数十个较小的星系环绕着它奔跑，恰似环绕巨大行星旋转的卫星。
Our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.
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。
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.
1677年11月，哈雷在南太平洋荒凉的圣赫勒拿岛上观测到了水星（最靠近太阳的行星）的凌日现象。
In November 1677, Halley observed a transit of the innermost planet, Mercury, from the desolate island of St Helena in the South Pacific.
中国的第一个行星探测器，小小的“萤火一号”轨道飞行器，也将搭乘“福布斯-格朗特”号飞船前往火星。
China's first planetary probe, the tiny Yinghuo-1 orbiter, will also hitch a ride to Mars with Phobos-Grunt.
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。
Massive projectiles striking much larger bodies create various kinds of craters, including multi-ring basins—the largest geologic features observed on planets and moons.
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。
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.
现在，冥王星可能是个矮行星，但是，亲爱的克莱德，在我书中你仍然是第一个发现行星的美国人。
Pluto may be a dwarf planet now, Clyde baby, but you're still the first American to discover a planet in my book.
这些小行星像类地行星一样，主要由岩石物质和金属构成。
These asteroids are like the terrestrial planets, in that they're composed mostly of rocky material and metals.
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。
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.
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