Looking up at the moon in the night sky, it’s difficult to grasp just how dramatic the topography of its surface really is.

I certainly do not condone the attacks on Israel of Oct. 7, 2023. Violence never solves problems. However, those attacks were ...

Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...