But Jupiter's moon Ganymede is bigger than Mercury.

但木星星木三其实比水星还。

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三，尽管这方面有很多猜想。

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.

一个是土六（泰坦），一颗比水星、比火星小不了多少巨型星，它是仅次于木三之外最星。

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.

她椅比舒服得多， 她仍然睡在衣里面， 看起来像新面包一样温暖， 像木三一样孩。

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.

在围绕木星及其星呼啸穿梭数年之后，2034 年 JUICE 将进入围绕木三轨道，而它比水星还，是太阳系最星。

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.

莱斯特学行星学家利弗莱彻是此次任务学家之一，说，木三海洋是否有类似化学物质是有关这颗星最问题之一。

Ganymede is the largest moon in our solar system.

伽尼墨德(木三)是太阳系里最星。

Ganymede is one of Jupiter's likely ocean-bearing moons.

木三是可能含有海洋木星星之一。

They're called Ganymede, Callisto, and Europa.

这几个分别叫木三、木四和木二。

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

它们多是岩石和冰构成，最木三可能有一个铁核。

Ganymede is also criss-crossed with large grooves.

木三上也布满了纵横交错沟壑。

The biggest of Jupiter's moons is Ganymede.

木星最星是木三（盖尼米德）。

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

木三是太阳系中最星，体积甚至超过水星！

The probe' s cameras will add much more detail to the existing, low-resolution maps of Ganymede' s surface.

探测器摄像头将为现有低分辨率木三表面地图添加更多细节。

Io, Europa, and Ganymede are close enough to interact gravitationally, providing a source of heat for their interiors.

木一、木二和木三引力相互影响，这是它们内部热量来源。

Oh, one more thing: both Ganymede and Io are magnetically connected to Jupiter.

木三和木一都通过磁场与木星联结。

Size isn't the only planet-like characteristic of Ganymede, either.

小也不是木三唯一类行星特征。

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

另一方面，木三离木星更远，在更安全、辐射更少地方。

The four largest moons, Io, Europa, Ganymede, and Callisto, are large enough to be seen from Earth with a telescope.

从地球上就可以用望远镜看到最四颗星，木一，木二，木三，木四。