Airbus just unveiled the ZeroE, a four-propeller commercial aircraft that will be powered by hydrogen-fuel-cell stacks and ...

"This test confirmed that all components — software, mechanical linkages, and control laws — work together as intended." ...

No one saw Earth's poles from space in the more than 400 human spaceflight missions preceding Fram2. The closest any crew ...

Vladimir Putin has ordered Russia's largest conscription drive in 14 years. His ultimate goal is to have an army larger than America's, our Moscow correspondent explains. Follow the latest below ...