ZME Science on MSN19h
The moon has its own Grand Canyon that was created in just 10 minutes
Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...
9 Brilliant Astronomy Events to Be Sure to See This Year
From supermoons to a total eclipse to the national park’s biggest and best-attended star parties, these are the must-see celestial shows of the year ...