The coming decades of space exploration hinge on a single, stubborn number: the 225 million kilometres between Earth and Mars. Chemical rockets, the workhorses of every space programme to date, take ...

The world’s heavy reliance on fossil fuels, especially for transportation, has left a deep mark on both the planet and public health. Burning these fuels releases a flood of greenhouse gases, which ...

In the relentless quest to make journeys to Mars shorter and safer, Russian scientists have recently turned heads with a bold claim: A plasma-based propulsion system could cut the Earth–Mars transit ...