For decades, astronomers have tried to determine how Pluto acquired its unusually large moon Charon, which is about half the size of the dwarf planet. Now, new research suggests that Pluto and Charon ...

Eons ago, in the frigid depths of our solar system, a dramatic collision occurred between two icy worlds. Instead of a catastrophic smash-up, the two bodies "kissed," merging temporarily like a ...

Recent scientific modeling has proposed a fascinating theory about how Pluto captured its largest moon, Charon. The theory suggests a novel “kiss and capture” event, where the two celestial bodies ...

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Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

One bright day on Earth about 4.5 billion years ago, everything changed. A massive object slammed into the young planet. The impact was so large that bits were flung out into space, eventually ...