1977年发射的“旅行者一号”太空探测器发回了木星和土星的壮观图像，然后飞出太阳系，执行前往恒星的单程任务。

The space probe, Voyager I, launched in 1977, had sent back spectacular images of Jupiter and Saturn and then soared out of the Solar System on a one-way mission to the stars.

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今天我想谈谈恒星对早期航海者的重要性，以及恒星的固定模式是如何被用作助航工具的。

Today I want to talk about the importance of stars for early seafarers, about how the fixed patterns of stars were used as navigational aids.

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恒星的颜色取决于它的表面温度。

The color of a star depends on surface temperature.

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And even in astrophysics, when you talk about stars, black holes, etcetera you're moving energy around.

即使在天文学中，当你谈论恒星，黑洞等时,你能量的转移。

麻省理工公开课 - 热力学与动力学课程节选

In fact, there's a property of gravitational fields anywhere, even in outer space, but there is some residual field between all the planets and all the stars in the universe, that the force on a body is proportional to the mass of the body.

实际上,这是任何地方的引力场都具备的属性,甚至是在外太空,在所有的行星和恒星之间,存在着某种剩余场,在这个场里作用在物体上的力,和物体的质量之间存在比例关系

耶鲁公开课 - 基础物理课程节选