Astronomers have been waiting decades for the launch of the James Webb Space Telescope, which promises to peer farther into space than ever before. But if humans want to actually reach our nearest stellar neighbor, they will need to wait quite a bit longer: a probe sent to Alpha Centauri with a rocket would need roughly 80,000 years to make the trip.
Igor Bargatin, Associate Professor in the Department of Mechanical Engineering and Applied Mechanics, is trying to solve this futuristic problem with ideas taken from one of humanity's oldest transportation technologies: the sail.
As part of the Breakthrough Starshot Initiative, he and his colleagues are designing the size, shape and materials for a sail pushed not by wind, but by light.
Using nanoscopically thin materials and an array of powerful lasers, such a sail could carry a microchip-sized probe at a fifth of the speed of light, fast enough to make the trip to Alpha Centauri in roughly 20 years, rather than millennia.
"Reaching another star within our lifetimes is going to require relativistic speed, or something approaching the speed of light," Bargatin says. "The idea of a light sail has been around for some time, but we're just now figuring out how to make sure those designs survive the trip."
It's a stupid idea to begin with, and a huge waste of 80,000 years of time. To read more, click here.