Seen here is a rolling rock, or a rock rolling? How did the fragmented rock (boulder) roll in this curvy fashion?Continue reading “Rolling in the crater”
Seen here is a rare type of lunar crater – a caldera. The caldera of Hyginus and the accompanying rilles (channels) on both sides are actually collapsed volcanic features! Continue reading “The collapsed crater of Hyginus”
On the Moon’s surface lie a set of bizarre looking features called Irregular Mare Patches (IMPs). Here’s one, called Ina.