The universe is supposed to look the same no matter where you stand. That idea, known as the cosmological principle, sits at the heart of modern astrophysics. It says matter spreads out evenly when ...

Recent astronomical observations have thrown a curveball at our understanding of the cosmos. The solar system, it seems, is hurtling through space at a velocity three times greater than previously ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...