See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Three secret moons have been discovered lurking out of sight in our ...

Our moon—or la Luna—has inspired humankind for millennia. It's largely agreed that the moon was created around 4.5 billion years ago when a protoplanet collided with early molten Earth, smashing off a ...

James Webb found Neptune's moon Nereid has an unusual icy surface, suggesting it formed alongside the planet instead of being captured later.

The moon is Earth’s only friend. And yet—despite a relationship stretching back billions of years—the gap between us only grows wider. Someday, far in the future, we will be left alone. What happens ...

Recent scientific research has unearthed an intriguing proposition that Earth may have once been orbited by two moons instead of one. This radical idea not only challenges our understanding of the ...

The next U.S. trip to the moon isn't about planting a flag. It's about learning how to live and work there. NASA has just reset its Artemis program, marking a clear strategic shift: Space exploration ...

Most scientists agree that a major collision 4.5 billion years ago with a protoplanet named Theia formed the Earth-Moon system. Now, a new study from the University of Nevada argues that, out of the ...

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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Imagine a tiny dusty moon, about one-seventh the size of our planet’s, with polygonal topographical features extending for hundreds of miles, and cliffs taller than any you’d find anywhere on Earth.

A researcher has used advanced models that indicate that the formation of Pluto and Charon may parallel that of the Earth-Moon system. Both systems include a moon that is a large fraction of the size ...

If you were hoping to see the “mini moon,” you’ve probably been disappointed. But experts say the asteroid was an important milestone in planetary defense research. Though there are hundreds of moons ...