The Younger Dryas Impact Hypothesis (YDIH) proposes that a cometary or meteoric body exploded over the North American area sometime around 12,900-years-ago.
Geologists have solved the source of Snowball Earth, a period when the planet’s environment was an extreme "icehouse".
A study published in the journal Prehistory Works, indicates that two objects sampled from the Villena Treasure were smithed using meteoric iron.
In a study of the Earth’s mantle, scientists have identified two compositionally distinct continent-sized anomalies which could be traces of a protoplanet which impacted with Earth during its early formation.
According to the giant-impact hypothesis (also known as the Theia Impact), the moon was formed when a giant object such as a protoplanet crashed into the Earth when the solar system was still young.