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Cake day: June 7th, 2023

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  • I’m only adding to the already well established answers here, but spacecraft also need to further away from the earth’s gravity well which requires a huge amount of energy. If you’re lifting 100 tons (if you’re including some kind of aeroplane + spacecraft), we are talking at least something like 100+ gigajoules of energy to get it into space in the first place, excluding orbital velocity. So the immense energy capacity of rocket fuel tends to be the only one sufficient for this, plus as the fuel tanks empty and the drag decreases, the acceleration of the rocket dramatically increases.

    A lot of this makes complete sense why rockets are the only viable solution for the time being.