A sidereal day is about 4 minutes shorter than a solar day.

一个恒星日比一个太阳日大约短4分钟。

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Some experiment data, which are captured in a solar day and a misty day, are utilized to verify the validity of our method.

比较了晴天与雾天条件下模型变化趋势的不同，大量实验亦表明此方法的有效性。

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Making the stuff of science fiction into reality, NASA engineers are testing solar sails — a unique propulsion technology that one day could enable deep space missions.

NASA的工程师将科幻小说中的素材变成了现实，他们正在检查太阳帆-这中独特的推进技术最终有一天会使深空任务成为可能。

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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

To prove a point that solar can work for every day practical uses, Kotak Solar recently electrified a village in India with solar power.

FORBES: Cleantech Startups Heat Up In India

Its creators said the trip is the first attempt by a solar airplane capable of flying day and night without fuel to fly across America.

NPR: Solar Plane Leaves Calif. On Cross-Country Trip

Until then, the Catholic Church branded as heretics scientific investigators who, like the 13th-century English friar Roger Bacon, calculated that the current calendar year was over-running the solar year by a whole day every 125 years.

ECONOMIST: Late for the date