Learn how planet Earth’s only natural satellite was formed, its weird features like a black sky and extreme temperatures and ...

more massive gas giant to see whether the impact generated long-lived seismic waves that the JWST could detect. Two questions guide this work. One asks if a giant impact like this produces ...

The accretion hypothesis proposes that the Moon was created along with Earth at its formation. The fission theory suggests Earth had been spinning so fast that some material broke away and began to ...

Some scientists think the moon formed about 4.5 billion years ago after a collision between an early version of Earth and a small planet called Theia. This crash released a huge amount of debris that ...

possibly challenging the widely accepted Giant Impact Hypothesis. The prevailing theory suggests the Moon formed from debris after a large object collided with Earth. This explains the mineral ...

Was it formed from a cosmic collision between Earth and a Mars-sized body, as the Giant Impact Hypothesis suggests? Or does it have a more complex birth story involving capture by Earth's ...