Billions of years ago, so the theory goes, something around the size of Mars smacked into Earth, spewing a whole bunch of dirt into space that eventually coalesced to form the Moon. This is called the ...

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 ...

Scientists have shown how the freezing of a ‘slushy’ ocean of magma may be responsible for the composition of the Moon’s crust. The scientists, from the University of Cambridge and the Ecole normale ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

The conventional explanation for the moon's formation is that an enormous rock smashed into the nascent Earth and created it as a result. A new theory challenges the particulars of how events may have ...

There's a new theory for how the Moon came to be that would solve some of the Giant Impact Hypothesis' issues. If Earth had a magma ocean on it already, a lot of problems work out. Share on Facebook ...

Eons ago, in the frigid depths of our solar system, a dramatic collision occurred between two icy worlds. Instead of a catastrophic smash-up, the two bodies "kissed," merging temporarily like a ...