And after all what was a year, if the Earth did not circle the Sun?
到底如何才算一年,如果地球没有绕太阳转的话?
Halley said that this comet traveled around the sun just like a planet did, and it took 76 years for the comet to circle the sun.
哈雷说,这颗彗星像行星一样,是围绕太阳运行的,它每绕太阳一圈大约需要76年。
Asteroids are minor planets, most of which circle the sun in a region known as the asteroid belt, between the orbits of Mars and Jupiter.
小行星是较小的行星,它们中的大部分在火星和木星轨道间的小行星带中环绕太阳运行。
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