Why It’s So Hard To Date a Crater

The 13-mile (21-km) wide Giordano Bruno crater on the Moon’s far side was recently imaged by NASA’s Lunar Reconnaissance Orbiter at an angle at a time when the setting sun cast long shadows, creating the high-relief image seen above. It’s known that the brightly-rayed crater is relatively young (see the video below) but how young?…

Hit The Slopes!

Things on the Moon don’t always stay put, as the tracks left by these large boulders show!