Astronomers have taken a step towards understanding how the Moon might have formed out of a giant collision between the early Earth and another massive object 4.5 billion years ago. Scientists led by ...

Scientists have dated the birth of the solar system to about 4.57 billion years ago. About 60 million years later a "giant impact" collision between the infant Earth and a Mars-sized body called Theia ...

Some 4.5 billion years ago, many scientists say, Earth had a meetup with Theia, another planetary object the size of Mars. When the two worlds collided in a big whack, the thinking goes, debris shot ...

Continent-sized chunks of an alien world may be hiding deep within our planet — and it could explain the weird structures that appear to be surrounding Earth's core. Scientists have long hypothesized ...

The big picture: Theia is a hypothetical ancient planet that orbited the Sun during the formation of the solar system. According to the giant-impact hypothesis, this protoplanet collided with Earth ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

An interdisciplinary international research team has recently discovered that a massive anomaly deep within the Earth's interior may be a remnant of the collision about 4.5 billion years ago that ...

About 4.5 billion years ago, a Mars-sized object smashed into the young Earth, spraying debris that coalesced to form the moon, many scientists think. Some remnants of that object, called Theia, exist ...

Seismic waves created by earthquakes as they travel through the planet’s interior change speed and direction as they move through different materials. Things like rock type, density, and temperature ...

A new study has determined with 99.9% accuracy that the Moon was formed 95 million years after the birth of the Solar System. This pegs the Moon as being a lot younger than we previously thought -- ...