How much energy does it take to get into space? | NumberHub with Timandra Harkness | Head Squeeze

Find out how much energy it takes to get into space with Timandra in this space week NumberHub special. Apparently it’s all down to the size of your rocket. To get ourselves into space, we have to first of all contend with gravity. Thanks to Isaac Newton, it’s easy to work out the force of gravity which we are dealing with by taking into account the masses of the two objects exerting a gravitational pull on each other and the square of their distance. In the case of jetting into space, the two objects would be the person to take flight and the Earth itself. If we are talking about getting to the moon however, then we only need to get as far away from Earth as it takes to enter the moon’s gravitational pull. We can then let moon gravity do its work and complete our journey. This is about 9/10th of the distance there, as the moon is a lot smaller than the Earth, so exerts much less gravitational pull.