A laboratory in Troitsk, Russia, may have just nudged humanity closer to interplanetary commuting. Scientists at Rosatom, the country's state nuclear corporation, have revealed a working prototype of ...

The coming decades of space exploration hinge on a single, stubborn number: the 225 million kilometres between Earth and Mars ...

The big picture: In deep-space travel, the race is no longer about who has the biggest rocket – it's about who can build the smartest plasma engine. As the competition to reach Mars intensifies, ...