Watching a live event happening half a world away, or chatting with someone in another country, would not be possible without the hundreds of communications satellites orbiting Earth to relay telecommunications signals electromagnetically. Propelling the largest of those satellites requires costly and highly toxic jet fuel, while launching smaller satellites requires other liquid fuels that could benefit from improvement. Israeli startup NewRocket is developing gel propulsion – a cheaper, more environmentally friendly rocket-engine technology offering the same level of performance and … [Read more...] about Novel Gel Propulsion Affects Communication Satellites