If the Earth-Sun distance were as little as 1 percent larger, runaway glaciation on Earth about 2 billion years ago would have caused the oceans to freeze and remain frozen to this day.
如果地球与太阳的距离再大哪怕1%，大约20亿年前地球上失控的冰期就会导致海洋冻结，并一直冻结到今天。
If the Earth-Sun distance were as little as 1 percent larger, runaway glaciations on Earth about 2 billion years ago would have caused the oceans to freeze and remain frozen to this day.
如果地球与太阳的距离再大1%，大约20亿年前地球上失控的冰期就会导致海洋冻结，并一直冻结到今天。
After reaching about half of the Earth-Sun distance from the Sun, the comet should fade rapidly as it then heads out of the inner Solar System.
到达距太阳半个日地距离之后，彗星会因朝着内太阳系之外急速前进而快速变暗。
But the larger envelope of circumstellar dust extends some 60 billion kilometers into space, equivalent to about 400 times the Earth-Sun distance.
但是拱星四周星尘更大的外壳可以向宇宙延伸600多亿公里，相当于地球到太阳距离的400倍。
Is it the distance of the planets from the Sun?
它是行星到太阳的距离吗？
The planets, in order of their distance from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
按照它们与太阳的距离排列，这些行星分别是水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星。
Calculating this angle would allow astronomers to measure what was then the ultimate goal: the distance of the Earth from the Sun.
计算这个角度可以让天文学家测量地球到太阳的距离，这是当时的终极目标。
The earth's not always the same distance from the sun, and it's not always tilting toward the sun at the same angle.
地球到太阳的距离并不总是相同的，地球也并不总是以相同的角度倾斜向太阳。
He thought the shorter the distance between the sun and the end product, the higher the profit to the farmer.
他认为，太阳和最终产品之间的距离越短，农民的利润就越高。
The distance from the Sun to Mars is more than 141 million miles.
太阳和火星之间的距离超过1.41亿英里。
Four hours later, Purcell was up with the sun, and by late morning he was on deck with the crew, watching the Remus Bob in the distance.
四个小时以后，普塞尔在清晨醒了过来，随后，他和船员们一起登上了甲板，看着远方的里莫斯潜艇在海面上漂浮。
That might sound confusing - seeing as how the Sun is so much bigger than the Moon, but remember - gravity decreases with distance - and the Sun is much farther away from Earth than the Moon.
听起来可能有些令人困惑——明明太阳是远远大于月球的，但请记住——引力随距离减小——比起地球与月球的距离，太阳遥远得多。
At that distance, the planet likely receives a bit more solar energy from its star than Earth does from the sun.
行星在这种距离下，吸收的太阳能很可能比地球从太阳得到的更多。
You see here the six planets that were known at the time, and the mean distance to the Sun.
这是当时已知的，六个行星，以及于太阳的平均距离。
Light falls off exponentially with distance, so a planet that is, say, twice as close to the sun as Earth is would get much more than twice the solar energy.
随着离开太阳的距离增加，阳光强度呈指数级下降，因此一颗距离太阳比地球近一倍的行星所接受到的阳光远远不止地球所接受到强度的一倍。
"The distance of this White Dwarf from the Sun is 63 light-years, which is very near our solar system compared with most stars in our galaxy", Luhman said.
“这颗白矮星距离太阳63光年，与银河系中大多数星球相比，它距离我们的太阳系非常近。”卢迈说。
Newton realized that a planet's orbit depends on its mass and its distance from the Sun.
l牛顿告诉我们，行星的运行轨迹决定于它自身的质量和它与太阳之间的距离。
Saturn is some 9.5 AU from our Sun, and Uranus is at a distance of some 19.6 AU.
土星距离太阳约9.5AU，天王星与太阳的距离则约为19.6 AU。
Kepler 22-b lies at a distance from its sun about 15% less than the distance from the Earth to the Sun, and its year takes about 290 days.
“开普勒-22b”与其所在星系母恒星之间的距离比日地距离要短约15%，公转周期约为290个地球日。不过，母恒星所发射出的光能量也要比太阳弱25%。
And the distance from the Earth to the sun, we have seen that before I call that the distance from the sun to the Earth is about 150 million kilometers.
从地球到太阳的距离，我们之前看过，我称之为太阳到地球距离，约1亿5千万千米。
It sits fairly close to its star, at 14.5 astronomical units AU; one AU is the average distance between Earth and our Sun.
HR 8799e十分接近其围绕的恒星，它们之间的距离为14.5个天文单位AU；一个天文单位是指地球到太阳的平均距离。
An astronomical unit is the distance between Earth and our sun.
一个天文单位是地球与太阳之间的距离。
One astronomical unit is the distance between the Earth and the sun.
一个天文单位等于地球到太阳之间的距离。
Another hour and I see the sun starting to come up in the distance.
又过了一个小时，我看到太阳开始从远方升起。
Very fresh: the sun and the moon Centre Centre at the smallest distance.
食甚：月球中心与太阳中心距离最小的时刻。
The distance to the moon was also known and a few centuries later, the sun was known to be at the center of our solar system with the planets in orbit around it.
几个世纪后，地球到月球的距离也为人所知，太阳被公认为是我们太阳系的中心，系内所有的行星都围绕着它旋转。
The distance to the moon was also known and a few centuries later, the sun was known to be at the center of our solar system with the planets in orbit around it.
几个世纪后，地球到月球的距离也为人所知，太阳被公认为是我们太阳系的中心，系内所有的行星都围绕着它旋转。
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