EnvironmentCould reusable rockets make solar geoengineering less risky? Injecting aerosols into the atmosphere – but at higher altitudes than planes can reach – could cool the climate while avoiding some of the downsides of lower-altitude solar geoengineering News
SpaceSpaceX aims to let astronauts avoid a radio blackout during re-entry When spacecraft re-enter Earth’s atmosphere, friction heats them up and creates a plasma sheath that stops communications – but SpaceX thinks its Starlink satellites could solve the problem News