Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

A relic from the beginning of the galaxy has finally come out of the sun's shadow. It gives us a rare look at a cosmic history that goes back before our own world. In November 2025, the interstellar ...