Earth’s been around for a long time. And during its tenure as a planet, has been slammed with a lot of cosmic objects; the largest of which left massive craters in their wake. In a new size comparison ...

This view of Saturn’s moon Rhea includes two large and ancient impact basins and a more recent, bright ray crater. The large basin above center is named Tirawa. This feature (and the similar-sized ...

Earth’s been around for a long time. And during its tenure as a planet, has been slammed with a lot of cosmic objects; the largest of which left massive craters in their wake. In a new size comparison ...