Our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.
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。
Scientists said they have found evidence of a giant planet far out in our solar system.
科学家表示他们发现了太阳系存在另一大行星的证据。
This might suggest a giant planet, at least the size of Jupiter and maybe up to four times as big.
这也许意味着存在着一个巨大的星体，至少有木星那么大，或者更达到木星的四倍大小。
The planet orbiting epsilon Eridani is a giant planet, with a mass about 1.5 times that of Jupiter.
带有行星的epsilonEridani是一颗巨行星，质量为木星的1.5倍。
Tyche is the nickname given to a hypothesized gas giant planet located in the Solar System's Oort cloud.
幸神星是太阳系奥尔特云内的一颗假设的气态巨行星的昵称。
As one example, a gas giant planet called HD 209458b has been found to contain oxygen, carbon and water.
举个例子，人们发现一颗被称为HD 209458b的巨大的气体行星含有氧、碳和水。
At its closest approach, the giant planet will swing closer and shine brighter than at any time between 1963 and 2022.
在其最接近点，这颗巨大的行星将旋转着靠近地球，而其亮度则会是1963年~ 2022年里最亮的。
But this year it is enlivened by a visit from the giant planet Jupiter, right on the border between Pisces and Aquarius.
但是今年却因巨大的行星—木星刚好从双鱼座和水瓶座之间经过而充满生气。
This image of Saturn was made in November 1980 by the Voyager1 spacecraft as it flew past the ringed gas giant planet.
这张土星照片是1980年旅行者1号飞船拍到的，当时飞船从这颗带光环的气体巨星旁边飞过。
Juno still has 36 more flybys of Jupiter, giving scientists more time to explore the wonders and mysteries of the giant planet.
朱诺号还会在木星进行至少36次近距离飞越，这给了科学家们更多的时间去探索这颗巨星上一切的奇景和秘境。
It's a gas giant planet also called Osiris, and it's orbiting so close to its star that some of its atmosphere gets blown away by the stellar wind.
它是颗气态大行星，也叫“欧西·里斯”星。它的运行轨迹过于接近其恒星，致使它的部分大气层被恒星吹起。
Technically, Neptune's existence was mathematically predicted years earlier, based on the gravitational effect the ice giant planet was having on neighboring Uranus.
从学术上来说，更早之前，基于这颗巨大的冰球对邻近的天王星的引力作用，人们就已经精确地预测到海王星的存在。
The icy rings of Saturn could be what's left of an ancient ice-rock moon that got stripped and swallowed by the gas-giant planet. Christopher Intagliata reports.
土星外面有一圈冰冷的土星环，可能是遥远时期它的一颗由冰和岩石组成卫星的遗留物，而这颗卫星已经被土星这个巨大的气质行星撕裂、吞噬了。
Orbiting only about three million miles out from its star, the Jupiter-size gas giant planet, dubbed TrES-2b, is heated to 1,800 degrees Fahrenheit (980 degrees Celsius).
这颗巨大的行星大小同木星相当，被称作TrES-2b，运行轨道距离其恒星只有大约300万英里，表面温度达华氏1800度（摄氏980度）。
Orbiting only about three million miles out from its star, the Jupiter-size gas giant planet, dubbed TrES-2b, is heated to 1, 800 degrees Fahrenheit (980 degrees Celsius).
这颗巨大的行星大小同木星相当，被称作TrES - 2b，运行轨道距离其恒星只有大约300万英里，表面温度达华氏1800度(摄氏980度)。
There is an unconfirmed detection of another planet in the epsilon Eri system, also a giant planet (although less massive at 0.1 Jupiter masses) in a very distant (40 AU) orbit.
在epsiloneri星系中还有一颗未确认的行星，那是在非常远的轨道(40个天文单位)上的另一颗巨星(虽然不足木星质量的0.1倍)。
Computer simulations show that if there is more than one giant planet in a solar system's family, they will perform a kind of gravitational arm-wrestling match, making their orbits unstable.
电脑模拟显示，如果在一个恒星系统中有超过一个巨行星存在的话，它们会上演一场“重力掰手腕”比赛，这会使得它们的轨道变得不稳定。
Astronomers soon realized this is not your average sunspot-it's a giant cluster of sunspots, several of which are larger than our entire planet.
天文学家很快就发现这不是普通的太阳黑子，而是个巨型黑子群，其中有些黑子比地球还要大的多。
Researchers believe that our moon was created when a giant object the size of Mars hit the early Earth, sending out a disc of debris orbiting our planet.
研究学者认为，我们的月球是在一个巨大如火星的物体撞击地球时形成的，碰撞产生圆形的碎屑沿着地球轨道飞行。
Not only is the planet a gas giant similar to Jupiter or Saturn, the planet follows an orbit that brings it very close to its parent star.
除了因为它是土星和木星那样的巨型气态行星以外，它运行的轨道有些时候和其母星非常靠近。
Astronomers have long come to a similar conclusion: that the Earth will be obliterated by a giant fireball as the sun burns up and expands so that its surface touches the planet.
天文学家也一直持相似结论：当太阳燃烧、膨胀以至于它的表面触碰到地球之时，地球将被这个巨大火球所毁灭。
Though the researchers have no direct proof that the new planet is rocky, its mass means it is not a giant gas planet like Jupiter, they said.
尽管目前研究人员还没有直接证据证明这是一颗岩状行星，但是他们宣称，这颗行星的质量表明，它并不是一颗类似木星的巨大气体行星。
This is a transitional planet somewhere between a gas giant and what we've been hoping to find.
它是巨型气体行星与我们找寻的目标之间的一颗过渡性星体。
Wrapped around the middle of the planet would be a single equatorial megacontinent, with giant dry valleys where the old Atlantic and Pacific used to be.
地球中间被一整块巨大的陆地覆盖，而原来大西洋和太平洋所处的位置则变成一片干涸的巨大山谷。
Wrapped around the middle of the planet would be a single equatorial megacontinent, with giant dry valleys where the old Atlantic and Pacific used to be.
地球中间被一整块巨大的陆地覆盖，而原来大西洋和太平洋所处的位置则变成一片干涸的巨大山谷。
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