Our sun is a star, and nine words move round it.

太阳是一颗恒星，并有九颗星星环绕着它。

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Most books now say our sun is a star. But it still knows how to change back into a sun in the daytime.

很多书上都说太阳是颗星星。不过好在它还知道怎样在白天再变回太阳。

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Summary: Is our Sun part of a binary star system?

我们的太阳是双星系统的一部分么？

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It might be the fact that he meant that our Sun is a second generation star.

NPR: What Makes Our Solar System Special?

Since Kepler 62 is a cooler star than our sun, planets can orbit closer to it than the Earth can to our sun before overheating.

CNN: Three more homes for life in the universe?

Depending on its initial mass, it might collapse to a compact hot star known as a white dwarf (when the star's mass is less than 1.4 times the mass of our sun) or to a neutron star (for stars 1.4 to about three times the mass of our sun) or to a black hole (for stars more massive than three times the mass of our sun).

CNN: Why gamma-ray burst shocked scientists