Humanity has learned to fling machines to the edge of the solar system, but the stars remain stubbornly out of reach. The ...

“Space ‍ ‌‍ ‍‌ ‍ ‌‍ ‍‌ is big. Really big,” one could say with no exaggeration, as the vast distances between stars sometimes bring a surprise visitor less than a light-year away, making possible its ...

While our Sun prefers to go solo, many other stars are parts of binary systems, with a pair of stars gravitationally bound to each other. In some cases, the stars are far enough apart that planets can ...