We live on a planet that seems motionless, yet Earth orbits the Sun at a dizzying speed, and our entire Solar System moves through the galaxy. But how fast exactly are we traveling through the cosmos?

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 ...

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 ...

Nothing manmade has reached further from Earth than the Voyager series of spacecraft. Hurtling away from the sun at 38,000 miles an hour, the duo have now traveled over 12 billion miles, with Voyager ...

Interstellar Comet 3I/ATLAS will reach perihelion, its closest approach to the Sun, on October 30, 2025, marking the climax of its brief, hyperbolic trajectory through our solar system before its ...

The three missions launched on a SpaceX Falcon 9 rocket the morning of September 24. NASA A SpaceX launch early Wednesday morning sent a trio of spacecraft toward a destination almost one million ...