Nuke-propelled spaceship reignites Nasa’s Goldilocks dream

World

Nuke-propelled spaceship reignites Nasa’s Goldilocks dream

Project could see probe travel 40 trillion km to the zone in the Alpha Centauri system that’s just right for life

Sarah Knapton

Nasa is hoping to build a nuclear propulsion system which would allow a spacecraft to travel to the nearest star.

While humanity has explored large parts of our own solar system, the distances to another star system are, literally, astronomical.

Nasa’s Voyager 1 became the first spacecraft to venture into interstellar space in 2012. But even if the 16km-per-second probe were heading in the right direction, it would take it 70,000 years to reach our closest star, Alpha Centauri, which is 4.37 light years away, or 40 trillion kilometres...

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