The recent Electron rocket launch included a couple of previously undisclosed payloads - a satellite called "The Humanity Star" which is like a space disco ball designed to be easy to see from the ground. The second payload is an upper stage using a 'green' rocket fuel which extends the capabilities of the launch vehicle. So let's talk about the technology behind green rocket fuel research. Of you can just listen to this fine selection of space themed music: Space Disco Music    • Cheezy Sci-Fi Tunes