By 2050 there will be too many people on the earth and over 100 million people will be living on the moon and other planets.

到2050年，地球上将人口过多，超过1亿人将生活在月球和其他行星上。

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The sun, moon and other planets circled the Earth in a regular, perfect pattern.

太阳、月亮和其他行星都以某种精准的模式围绕地球转动。

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Lockheed's plan involves using the combined gravity of the Earth and the Moon to ensure that its craft hovers on the same spot, within sight of both planets.

洛克希德公司的计划中包括利用地球和月球引力相结合，以保证两个星球看到的飞行器是在同一个点上。

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In 1609, Italian philosopher and physicist Galileo Galilei used descriptions of Lippershey's gadget to build his own telescope, and with it he was able to observe the Earth, the Moon and several planets in our solar system in detail for the first time.

FORBES: No. 17: The Telescope

In turn, that should help resolve questions about how the Moon, the Earth, and other planets in the solar system evolved in the first place.

FORBES: NASA's GRAIL Mission Will Unlock Secrets Of The Moon's Interior

Donald Olson and Thomas Lytle of Southwest Texas State University have calculated the tidal forces exerted on the earth by the sun, the moon and the planets.

ECONOMIST: Not the end of the world