Getting a spacecraft to another star is a monumental challenge. However, that doesn't stop people from working on it. The ...

Traveling from one star to another is currently impossible to achieve within a human lifetime. But some projects are ...

Many stars in our galaxy exist in pairs. Now scientists are finding clues that our Sun may once have had a companion of its own. The question is, where did it go?

A 1,000 kg probe powered by Sunbeam could reach 10% of light speed, making Alpha Centauri a 40-year journey within a human lifetime. Powering such a beam requires up to 19 gigaelectron volts ...