SpaceX Plans to Beat NASA in Launching the Biggest Rocket Ever - Yahoo! Voices

16, putting out a prodigious 4 million kg (8.8 million lbs) of thrust.

As Space.com reports, earlier this week, SpaceX successfully test-fired 11 of the 33 engines on its Brobdingnagian Super Heavy rocket, a beast of a machine that, when all of its engines are lit, will produce more than 7.25 million kg (16 million lbs) of thrust, nearly double that of the SLS.

Unlike the SLS, of course, Starship hasn’t yet flown, but the engine test is preparatory to a first uncrewed launch of the rocket that could happen later this month—though it is likelier to occur in the first quarter of 2023.