Four Earth-sized planets detected orbiting the nearest sun-like star

Re:Four Earth-sized planets detected orbiting the nearest su... by vinchuco on Thursday August 10, 2017 @03:27PM (#14983212)

Weird question. Can we make Earth a spaceship by somehow manipulating the orbit of the moon?

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Re:Four Earth-sized planets detected orbiting the nearest su... by Symmetry on Friday August 11, 2017 @11:25AM (#14990598)

Well, we'd need to apply 40 km/s of delta-v. The moon weighs 1/80th as much as the Earth. By the rocket equation, we'd have to throw the material of the Moon away from Earth at 3219 km/s or 1/100 of the speed of light in order to accelerate Earth enough.

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Re:Four Earth-sized planets detected orbiting the nearest su... by eggpy on Thursday August 10, 2017 @03:37PM (#14983303)

We'd have to figure out how to get the earth spinning beyond the escape velocity of the Sun. So, probably not just by manipulating the orbit of the moon.

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