I’ve grown up with rockets that burn chemical fuel, but NASA’s next big leap in propulsion could make those engines look as dated as steam trains. By turning to nuclear power in space, the agency is ...

Nasa is developing ways to use nuclear power to send spacecraft to their destinations. Nuclear propulsion could greatly reduce the journey time to Mars, perhaps cutting a voyage of more than six ...

The first human Mars explorers won’t have it easy. Every additional day in deep space will increase their exposure to deadly cosmic radiation, while isolation gnaws at their minds and microgravity ...

While NASA, along with its international and commercial partners, is going pedal to the metal back to the moon, the space agency is not neglecting Mars. In 2028, if all goes well, NASA plans to test a ...