The sun and its planets are called the solar system, and our solar system is a small part of a much larger Galaxy or the Milky Way.

太阳和它的行星被叫做太阳系，我们的太阳系只是一个由恒星和行星组成的星群里的一小部分，这个星系比太阳系大得多，叫银河系，或者银河。

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Here we see an image representing the dying of the sun as it runs out of fuel, and its consumption of the planets of our solar system.

在这里，我们看到一个形象代表太阳的死亡，因为它耗尽燃料，它是我们太阳系的行星消费。

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Each of the planets in our solar system takes a longer path round the Sun than its neighbour.

太阳系中的每个行星环绕太阳运行的轨道都比它的内邻星要长。

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Kepler-37b is a tad larger than our heavenly dance partner, the Moon, and whizzes round a star much like our Sun, with two larger planets in its system for company.

ENGADGET: NASA's Kepler telescope spies smallest planet to date, no aliens

Just over 50 extrasolar planetary systems have so far been discovered and analysis of them shows just how unusual our local system is with its giant planets (Jupiter and Saturn) positioned well away from the Sun.

BBC: Star 'eats' a planet