How big of a rocket would you need to propel the entire earth?

And how much money would someone need?



  1. 0 Votes

    It would be almost impossible for humans to alter the course of the Earth.  The Earth’s core alone is a ball of iron more than 4000 miles in diameter (that’s the size of Mars, by the way) spinning at 1000 miles per hour. To exert a force greater than the core’s intertia alone, you’d need something greater than 500 times the strength of every single nuclear weapon in the world going off at once. And that’s just the core. 

    I’m by no means a master of physics, but even if someone had all the technology and money in the world, I don’t think they’d be able to alter the movement of the planet.

  2. 0 Votes

    Based on Newton’s second law, Force = Mass x Acceleration, one can calculate the amount of force needed to propel the mass of the earth at a given rate.  Let’s say you wanted to accelerate Earth (in any direction) with a rocket at a rate of 1 meter per second per second.  We can use the Saturn V, the most powerful rocket used to date, as the source of force to accelerate Earth’s mass, which is about 5.98 x 10^24 kg.  At sea level, the Saturn V produces 7.5 million pounds of thrust.  Thus, to propel the earth at the stated rate, we would need roughly 4 X 10^16 Saturn V rockets. 

    This, of course, is not an exact measurement, because these rockets would propel the earth with more force in space, where there is no atmosphere.  In short, there is no rocket in existence that could power the acceleration of our planet. 

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