How do you design a sail that can get a spacecraft to another solar system? NASA's Voyager 1 and Voyager 2 probes, which launched in the 1970s, remain the only two human-made objects ever to leave our ...

Breakthrough Starshot plans to send microscopic probes to Alpha Centauri using lightsails. Previous conceptions of these structures have imagined them being passively pushed by light from the sun, but ...

Diffraction gratings could allow laser-sailing craft to hold the line. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Spacecraft could fly to ...