Moon’s precursor planet, Theia, disappeared billions ago, leaving scientists no direct chemical evidence to support the ...

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

The sun is believed to be 4.6 billion years old, but how long this glorious plasma ball exactly took to form is still unknown. A team of international researchers has found the answer to this question ...

To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed Theia slammed and merged with the primordial Earth, throwing material into ...

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 ...

The organic molecules that were the building blocks for life on Earth could have formed in the dusty disk that surrounded our sun before the solar system had planets, a new computer model shows.

The moon is much older than we thought, according to a new analysis conducted by researchers from the United States, France, and Germany. It is possible that Earth's companion formed as early as 4.53 ...