sedna: people act like rocket science is the hardest thing in the world, but honestly rockets are pretty simple.

sedna: according to newton’s third law, if you push something one way, you’ll get pushed the other way.

sedna: to to make a rocket, you just need to make some fuel explode all in one direction, which pushes the rocket really fast the other way
text: really fast. also really fast.

sedna: the only tricky bit is making sure the rocket goes the right way. …and survives extreme heat. …and aerodynamic forces …and also doesn’t blow up. …and some other things.