Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon ...

The story of how the Moon came to be has always carried a touch of mystery. Picture the young Solar System as a restless place where new worlds grew from swirling gas, dust, and rock. In that chaotic ...

New research shows that Theia, the planet that collided with Earth and formed the Moon, was a rocky world born closer to the ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

While the feds idled, an interstellar object known as 3I/ATLAS was barnstorming the solar system, at a speed that reached 153 ...

Guest: Professor Dagomar Degroot, environmental historian at Georgetown University and author of Ripples on the Cosmic Ocean: ...

Space looks very dark from Earth. But does the solar system, and the universe for that matter, have an area that's the ...