A solar electric catamaran called Sun 21 entered the record books for crossing the Atlantic in 29 days, but the Planet solar team is the first to try to sail around the world.

一艘太阳21太阳能发电双体船，29天横越大西洋，而入纪录。尝试坏绕世界则为太阳能星球号首创。

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Our planet Earth, together with other planets, revolve around our Sun in what is called our Solar system.

我们的行星地球，连同其他行星，围绕我们的太阳旋转，这就是我们的太阳系。

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For the Earth to maintain a constant average temperature, such emissions from the planet must balance incoming solar radiation.

为了使地球保持恒定的平均温度，来自地球的这种辐射必须平衡入射的太阳辐射。

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In that event,astronomers were able to observe the icy comet long before it struck the solar system's biggest planet.

VOA: special.2009.08.25

Mars Day at the Smithsonian Air and Space Museum in Washington is a celebration of our solar system's most famous planet.

VOA: special.2010.07.28

This most recent collision with Jupiter brought attention to how the huge planet's gravity affects our solar system.

VOA: special.2009.08.25

Nocera is an engaging, persuasive and occasionally profane speaker who mercilessly dismisses every form of energy on the planet besides solar.

FORBES: Cheap Hydrogen From Dirty Water...Maybe

The extra-solar planet is one of a mere handful detected using a novel technique called microlensing.

BBC: NEWS | Science/Nature | Planet hunters find 'super-Earth'

They proclaimed the observation as the first visual - albeit indirect - proof of a planet outside our Solar System.

BBC: We saw it too, say astronomers