When a meteor streaks across the sky, it's not just beautiful. It's nature's way of delivering a time capsule to Earth.

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...

Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though ...

Westfield High School senior Kaitlynn Goulette and freshman Krystyna Goulette have developed a walkable, scale model of the ...

The Solar System is more than just planets; it is home to a dazzling variety of moons, each with its own unique charm. Some ...

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

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

About 4.5 billion years ago, Earth had a violent neighbor. A young, still-forming planet named Theia slammed into our world with enough force to melt vast portions of its mantle and scatter a huge ...

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

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

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...