This fusion-powered rocket could halve the time it takes to get to Mars

Interplanetary travel might be about to get a whole lot faster — and hotter.  UK startup Pulsar Fusion today unveiled “Sunbird,” a nuclear fusion-powered rocket concept that could halve the time it takes to travel across our solar system — and, maybe, beyond it.  Machine learning models show the rocket could potentially propel a spacecraft with a mass of about 1,000kg (2,200lb) to Pluto in four years — less than half the time it took NASA’s New Hori