The Antikythera Mechanism also tracked both the lunar year and the solar year.

安提基西拉机制还追踪了农历年和太阳年。

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As the Roman Empire expanded northward, it organised its activity chart for the most part around the solar year.

随着罗马帝国向北扩张，它构建活动图的大部分时间是在太阳年前后。

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In more northern climes, however, where seasonal agriculture was practised, the solar year became more crucial.

然而，在更北的气候地带，由于实行季节性农耕，回归年变得更加关键。

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NASA hopes that Dawn's year long orbit around Vesta will help scientists learn more about the development of the solar system, and how asteroids and other space objects were created.

VOA: special.2011.07.27

Next year,the solar decathlon will be held in Madrid,Spain.

VOA: special.2009.10.27

"The cost of solar has been dropping on average about 30 percent a year, where the cost of traditional energies has been going up exponentially because the price of fossil fuels is going up,".

VOA: standard.2009.10.27

Nearly 6, 000 years ago, the Egyptians were the first to follow the solar year.

ECONOMIST: Late for the date

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

All told, of the 561 MW of solar added last year by the top 10 utilities (776 MW of solar capacity was added altogether in 2010), 140 MW are actually owned by utilities, marking an increase of more than 300% in utility-owned solar over the previous year.

FORBES: Solar Halo Sticks in U.S. As Utility-Owned Solar Expands