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 ...

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 ...

Erosion-carved troughs that grow and branch during multiple Martian years may be infant versions of larger features known as Martian “spiders,” which are radially patterned channels found only in the ...