- Rocketlab is exploring in-orbit refueling of the Electron rocket's second stage, and their satellite, Photon. They could refuel Photon-to-Photon: just like a miniature SpaceX Starship. In-orbit refueling could increase Rocketlab's interplanetary payload capacity by 700%. https://twitter.com/hugo_blair/status/1433320987592835073?s=20 3 comments wallstreetbets