Mr Musk said: “Very impressive. Note, legs will be bigger and there’ll be way more stuff in engine bay.
“Main engines actually do majority of work in turning ship vertical before landing.”
In another tweet, he added: “It’s counter-intuitive, but Raptor has so much thrust at high Isp with liquid (high density) propellant and pump-fed (light tanks), that it beats hot gas for the flip.
“That said, hot gas beats the heck out of N2 for orbital manoeuvres and stabilizing ship if landing in high winds!”
Starship is being developed as a fully reusable rocket capable of carrying up to 100 tonnes of cargo into orbit.