Everything we thought we knew about the moon's origins may be wrong, new research suggests. Ever since we landed the first humans on the moon, scientists have thought that our lone lunar companion ...

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

A recent theory has emerged suggesting that the answer to Mercury’s unusually large metallic core may lie in the early history of our solar system. This theory proposes that a soft collision between ...

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

Physicists theorize our universe may have collided with another in the past, creating the Big Bang. Level two of the ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The formation of the moon has long remained a mystery, but new studies support the theory that ...

Among the inner solar system, Earth is the only planet that experiences plate tectonics. A new study, using convection models, shows that Earth’s collision with the protoplanet Theia some 4.5 billion ...

The moon did indeed coalesce out of tiny bits of pulverized planet blasted into space by a catastrophic collision 4.5 billion years ago, two new studies suggest. The new research potentially plugs a ...