Our Moon was formed from a violent collision that occurred around 4.5 billion years ago. And the giant body that smashed into the Earth, birthing the planet’s natural satellite, was named Theia. A new ...

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 ...

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New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon, came from closer to the sun. Artist’s impression of the collision between ...

The Moon has always held a certain mystery, from influencing tides to inspiring mythology, poetry and scientific inquiry. For decades, astronomers have attempted to answer the same fundamental ...

Saturn’s largest moon, Titan, might have formed after a collision with a lost moon, according to new research.

Get ready for some news that’s out of this world. An asteroid known as 2024 YR4 could be on course to make contact with the moon—and such an impact wouldn’t come without consequence, according to an ...

If an asteroid is on a collision course with the moon, what should humanity do? Try to nudge the space rock out of the way before it strikes? Obliterate it with a nuclear explosion? Those are the ...

Saturn’s largest moon, Titan, may have been born in a colossal cosmic crash. New research suggests Titan formed when two older moons slammed together hundreds of millions of years ago—an event so ...

Scientists suggest Titan formed from a giant moon collision that also may explain Saturn’s rings and strange moon orbits.