But Jupiter's moon Ganymede is bigger than Mercury.

但木星卫星木卫三其实比水星还大。

Whether Ganymede' s oceans have a similar chemical endowment is one of the biggest questions about the moon, says Leigh Fletcher, a planetary scientist at the University of Leicester, and one of the scientists working on the mission.

莱斯特大行星科利弗莱彻是此次任务科一，说，木卫三海洋是否有类似化物质是有关这颗卫星最大问题一。

After a few years of whizzing around Jupiter and its moons, in 2034 JUICE will enter orbit around Ganymede — which, being bigger than the planet Mercury, is actually the solar system's largest moon.

在围绕木星及其卫星呼啸穿梭数年后，2034 年 JUICE 将进入围绕木卫三轨道，而它比水星还大，是太阳系最大卫星。

The first is Titan, a monster satellite that's actually bigger than Mercury, not that much smaller than Mars, and second in moon size ranking only to Jupiter's moon Ganymede.

一个是卫六（泰坦），一颗比水星大、比火星小不了多少巨型卫星，它是仅次于木卫三外最大卫星。

It will come to the system just 15 months after Clipper, and it'll even be doing a few flybys of Europa before settling into a tight orbit around Ganymede.

它将在“剪刀号” 抵达后仅15个月到达该系统，并在进入木卫三紧密轨道前， 对欧罗巴进行几次飞越探测。

Her chair being a far more comfortable one than his she still slept on inside his great-coat, looking warm as a new bun and boyish as a Ganymede.

她椅子比服得多， 她仍然睡在大衣里面， 看起来像新面包一样温暖， 像木卫三一样孩子气。

Looking at three of the moons of Jupiter, for every once that Ganymede orbits the planet, Europa goes round twice and Io four times.

观察木星三颗卫星，每当木卫三绕木星公转一周，木卫二便绕行两周， 而木卫一则绕行四周。

To date,   we have not proved that life arose on Mars or Ganymede, for all the conjecture on that front.

迄今为止， 我们还没有证明生命起源于火星或木卫三，尽管这方面有很多猜想。

Ganymede is the largest moon in our solar system.

伽尼墨德(木卫三)是太阳系里最大卫星。

" Jupiter's biggest moon is Ganymede, not Callisto, " she said, pointing over Ron's shoulder at a line in his Astronomy essay, " and it's lo that's got the volcanoes."

“木星最大卫星是木卫三，不是木卫四，”她从罗恩身后指着那篇天文论文中一行文字说道，“有火山应该是木卫一。”

They're mostly rock and ice, though Ganymede, the biggest, may have an iron core.

它们大多是岩石和冰构成，最大木卫三可能有一个铁核。

The ESA took the opportunity to do a test run of Juice's instruments, which it will use to look for molecular signatures of habitability on the moons Europa, Ganymede and Callisto.

欧洲航天局借此机会对 Juice 仪器进行了测试，这些仪器将用于寻找木卫二、木卫三和木卫四上适宜居住分子特征。

In 1610, for example, Galileo used the first telescope to discover Jupiter's moons Io, Callisto, Europa, and Ganymede — now known as the Galilean Moons.

例如，1610 年，伽利略用第一台望远镜发现了木星卫星木卫一、木卫四、木卫二和木卫三，这些卫星现在被称为伽利略卫星。

The current count is 95 confirmed moons for Jupiter, including the largest moon in our solar system, Ganymede, which is larger than the planet Mercury.

目前已确认木星卫星有 95 颗，其中包括太阳系中最大卫星——木卫三，比水星还大。

Jupiter's moons include the largest in the solar system, Ganymede, an ocean moon called Europa and a volcanic moon named lo.

木星卫星包括太阳系中最大木卫三，一颗名为木卫二海洋卫星和一颗名为lo火山卫星。

My moon, Ganymede, is big too.

我卫星木卫三，体型也十分庞大。

Ganymede is the largest moon in the solar system, and is even larger than the planet Mercury!

木卫三是太阳系中最大卫星，体积甚至超过水星！

Ganymede, on the other hand, is further out in a safer, less radiation-riddled part of Jupiter's neighborhood.

另一方面，木卫三离木星更远，在更安全、辐射更少地方。

They're called Ganymede, Callisto, and Europa.

这几个分别叫木卫三、木卫四和木卫二。