The Nankai Trough just off southern Japan poses a severe seismic threat, with locked plates accumulating enormous stress. A ...

Giant troughs that stretch across the asteroid Vesta may have formed after a fellow asteroid smacked into Vesta's south pole, researchers say. These findings add to evidence that, like Earth, Vesta is ...

Off the southern coast of Japan, the Philippine Sea Plate lies underneath the Japanese mainland. The locked tectonic plates ...

Enormous troughs that reach across the asteroid Vesta may actually be stretch marks that hint of a complexity beyond most asteroids. Scientists have been trying to determine the origin of these ...

View of a Mars polar trough, approximately 20 kilometers across and a few hundred meters deep. The image shows a mound (orange dot) and a depression (blue dot) that are concentrically layered. Some of ...