Skywatchers on Thursday evening, Feb. 6, will notice an eye-catching pairing-off between two of the brightest objects in the ...
Two similarly-sized canyons on the moon got carved by flying rocks in about ten minutes. That's because these two canyons formed in the wake of an asteroid or comet smashing into the moon ...
The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.