When this happens, the umbra cannot reach Earth and an antumbra shadow is created over the planet's surface.

当这种情况发生的时候，本影无法到达地球，非本影阴影就会出现在地球表面。

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During a total solar eclipse, the moon passes completely between Earth and the sun, casting a circular shadow over the planet.

日全食发生时，月球运行到地球和太阳的正中间，并在地球上投下圆形的影子。

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Partial solar eclipses happen when the moon blocks only part of the sun's disk, as seen from Earth, casting regions of the planet in shadow.

当月亮遮住部分太阳时，日偏食发生了，就像从地球上看到的一样，使得地球上的部分地区笼罩在阴影中。

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The solar eclipse occurs when the moon passes before the sun, casting a huge shadow on Earth.

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Dr Duif rules out a third explanation, too: that cooling of the Earth's crust due to the eclipse shadow causes the ground to tilt slightly, and thus distorts the results.

ECONOMIST: Gravitational anomalies

Also, spacecraft stationed at L2 do not experience the swings in temperature that objects circling close to Earth sometimes undergo as they move in and out of shadow.

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