The newly released Forbes' annual list of the world's 15 richest royals shows that the royals are not immune to the global downturn and have lost a total of $22b over the past year, down 17% to $109b.

《福布斯》杂志最新发布的全球王室富豪榜显示全球15个最富有王室经历金融危机动荡一年，身家共缩水220亿美元，下降17％至1090亿美元。

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Kepler-22b is quite a bit larger than the biggest rocky planet in this Solar System (which happens to be Earth), but much smaller than the smallest of our local gaseous worlds (Neptune).

BBC: Viewpoint: The obsession with a 'twin Earth'

We really don't know what sort of composition a planet the size of Kepler-22b would have.

BBC: Viewpoint: The obsession with a 'twin Earth'

To be Earthlike, you also need a sun like ours and Kepler-22b has that.

BBC: Viewpoint: The obsession with a 'twin Earth'