Ok so why aren't we talking about perhaps the biggest space news of the year?
>Portal Space Systems, a startup of SpaceX and Blue Origin employees, are developing the Supernova spacecraft, a vehicle that uses solar thermal propulsion
>Supernova is designed to use foldable mirrors to focus the sun’s rays onto the propulsion system’s heat exchanger.
>When ammonia passes through the heat exchanger, it rapidly builds up pressure and produces thrust.
>The company claims it can achieve performance rivaling NTP
>LEO to MEO in mins
>LEO to GEO in hours
>LEO to cislunar in a day