Alexphan5404: H2O Is Water.
it runs on hydrolox (or hydro-ox because the oxygen isn't liquid). Exhaust is water though
A Rocket That Runs On Water? Now I've Seen Everything.
Sorry, I just realized you were asking how this got to the front page not how it works. If I am going to be honest I don't know how it happened but I am incredibly grateful to the people who got me to my first front page post.
or you press the red button to stop it.
you spark the green button and it starts the rocket.
what is this and how it got to fp?