The launch vehicle poised to give TESS its boost into space later today is the SpaceX Falcon 9, a two-stage rocket with nine Merlin engines powering the first stage and a single Merlin engine powering the second. Both stages run on a combination of liquid oxygen and RP-1, a refined kerosene. Propellant loading operations begin …
TESS’s Ride to Orbit: the SpaceX Falcon 9








