NASA’s Hubble Space Telescope has captured a spectacular scene in a star system not far from Earth, offering the rare chance to witness massive planets colliding. For decades, astronomers have studied ...

This artistic impression shows the collision of two planetesimals in the young, evolving planetary system of Fomalhaut. NASA’s Hubble Space Telescope has captured the dramatic aftermath of two violent ...

Two Earth-size planets that orbit each other might exist around distant stars, researchers say. The solar system has many examples of moons orbiting planets; Jupiter and Saturn both possess more than ...

Hit-and-run collisions between embryonic planets during a critical period in the early history of the Solar System may account for some previously unexplained properties of planets, asteroids, and ...