a gas giant的意思|示意

The planet, HR 8799e, is a gas giant rather like Jupiter, but about 10 times as massive — similar to the other three planets in the system, which Marois discovered in 2008.

这颗编号为HR 8799e的行星是一颗与木星相似的气态巨星，但其质量约是木星的10倍，这一点与该星系中由Marois于2008年发现的其它三颗行星相似。

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。

It is a gas giant and is larger than Neptune but less massive.

这是一颗巨大的气体和大于海王星但不巨大的。

Yet a rocky world named Kepler 10b is being described by astronomers as one of the greatest discoveries in history – a ‘missing link’ between Earth and the giant planets made of gas.

一个命名为开普勒10的岩石星球被天文学家描述为历史上最伟大的发现之一—地球与巨大星球关于气体缺失了链接。

It's definitely not a gas giant like Jupiter. Nor is it habitable—it's too hot.

它肯定不是像木星一样的巨型气体行星，也不适宜人类居住——那太热了。

The team think it is rocky because it weighs only five times asmuch as Earth—too little for a gas giant.

他们之所以认定它是一颗岩状行星，是因为它的质量仅为地球的五倍——与气态行星相比实在相去甚远。