The sun is the major source of energy for our planet.

太阳是我们星球能量的主要来源。

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In the end, the best fuel will be both affordable for car users and green for our planet.

最终，最好的燃料是车主可以负担得起的，同时对我们的星球来说是环保的。

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Some uses of color in nature remain unknown, but one thing is for sure, color not only makes our planet beautiful but it is also necessary for our planet to live on.

颜色在自然界的一些用途仍然未知，但有一件事是肯定的，颜色不仅使我们的星球变得美丽，也是我们的星球得以生存的必要条件。

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Astronomers at Lowell and many other observatories continue to search for life beyond our planet.

VOA: special.2010.07.11

" planets like our own planet formed. So star formation is a very big thing for Herschel."

VOA: standard.2009.05.14

Writer-director Cameron also acknowledges that what the humans try to do on the fictional Pandora is a clear metaphor for what he believes are the dangers of exploitation on our own planet;

VOA: standard.2009.12.19

"We also are determined to build a sustainable future for our planet, " Biden said.

CNN: Biden promises 'new tone' in U.S. foreign affairs

Though not always as simple or sexy as product innovations, systems innovations are critical for our planet.

FORBES: Let's Stop Overlooking Systems Innovations

That tells us that these standards are going to be a win for consumers, for these companies, for our economy, for our security, and for our planet.

WHITEHOUSE: President Obama Announces New Fuel Economy Standards