Constellation Energy, which is developing nuclear-power supplies for AI applications, fell. GE Vernova, the maker of turbines and other utility equipment, also fell. Write to Rob Curran at ...

NASA is developing a groundbreaking spacecraft concept designed to revolutionize Mars travel. The ambitious plan involves ...

NASA is working on a groundbreaking nuclear electric propulsion system that could dramatically speed up trips to Mars. The ...

A team of scientists has made the first experimental measurements of laser-induced motions of miniature lightsails in the lab.

Distrust over the federal government’s ability to build a permanent repository played a critical role in committee’s decision to kill controversial ‘temporary’ storage bill.

A nuclear-powered icebreaker lost control and slammed into a cargo ship it had been sent to rescue. The Russian vessel, Fifty Years of Victory, was en route to assist the bulk carrier Yamal Krechet, ...