Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of Earth’s mantle and ejecting a huge debris disk that later formed the moon.

About 4.6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in on itself due to gravity. The Sun, planets, and eventually Earth formed out of the cloud. But when did ...

'Theia' is a long-vanished world, a planet-sized body thought to have smashed into the early Earth and that helped to form the moon. A new study has now analysed ancient lunar and terrestrial rocks to ...

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 ...

The Giant Impact Hypothesis has long fascinated scientists as the leading explanation for the Moon's formation. Around 4.5 billion years ago, the Earth and a Mars-sized protoplanet called Theia ...

New Delhi: About 4.5 billion years ago, a protoplanet called Theia collided with the Earth, changing the size, composition and orbit of the planet and forming the Moon. Deep within the interior of the ...