Comets are icy bodies of dust and rocks that originated ... But that's not the only such event. The third-largest known ...

However, the discovery of this new layer of Earth could shed some much-needed light. Despite seemingly floating on this layer of molten rock, tectonic plates do not appear actually to be tied to ...

Patagonia’s ‘living rocks’ hold ancient bacterial biofilms, offering insights into early life and potential bioengineering ...

While those odds may not sound high, that probability of a collision with Earth represented a record for large space rock. YR4's infamy meant that astronomers would be paying close attention to it.

The authors do not work for, consult, own shares in or receive funding ... and its discovery supports a theory about the ...

This is about three times as long ago as the earliest dinosaurs roamed—but still not long in the scheme of Earth's mind-bending ... of increased weathering of rocks situated on a large tropical ...