Pulsar Fusion, a UK-based rocket startup, says it fired plasma inside its Sunbird nuclear fusion rocket engine during a live demonstration on March 25, 2026, at a conference in California. The company ...

Plasma flashed inside the exhaust system, held in place by electric and magnetic fields. This scene marked a small but closely watched step in Pulsar Fusion’s bid to build a fusion-powered space tug.

Add Yahoo as a preferred source to see more of our stories on Google. In March 2026, a British company switched on a fusion rocket engine and got plasma glowing inside it. This is Pulsar Fusion's ...