The huge team behind the Event Horizon Telescope already made news with their first image of a black hole. But they've got bigger ambitions.
The SABRE air-breathing rocket engine is ready for a major round of testing in the next 18 months after passing a preliminary design review by the European Space Agency.
Today, Northrop Grumman's Antares rocket will launch from NASA's Wallops Flight Facility in Virginia. Check for it in the afternoon sky.