While it's unlikely to come to fruition, designs for the 2.4-billion-ton Chrysalis could see humanity embark on a four-century journey to a new star.
Get ready for the ultimate road trip with no return ticket. Engineers and architects have unveiled a concept for a colossal spacecraft named Chrysalis, designed to be a self-sustaining world on a one-way voyage to Alpha Centauri. This is the closest ... [3923 chars]