Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

At the farthest edge of the Sun’s influence, the Voyager probes have stumbled into something that sounds almost mythic: a ...

If you had a few billion dollars and some of the most talented space scientists and engineers in the world, where would you go? There's no wrong answer, really. Even if you narrow it down to just the ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...