Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

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

Observations with the instrument SPHERE at ESO's Very Large Telescope have produced an unprecedented gallery of "debris disks" in exoplanetary systems.

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

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

Apollo samples provide evidence: Researchers analyzed Moon rocks brought back by the Apollo missions and, for the first time, ...

Researchers from the Max Planck Institute for Solar System Research led the study. They examined iron isotopes in 15 Earth ...

In the current issue of the journal Science, researchers determine the possible composition of Theia. The impactor’s ...

There are several frozen moons in our solar system, orbiting the gas giants. Some of them, despite having temperatures that would make Antarctica feel tropical, have liquid water under the surface.

In A Nutshell Inner Solar System origins: By measuring iron isotopes in Moon rocks and meteorites, researchers determined ...

Isotopic fingerprints in lunar, terrestrial, and meteorite samples show Theia formed in the inner Solar System, likely near ...

Theia was part of the inner Solar System, and was formed closer to the Sun than Earth, a new study has found.