Florence and Charleston are good destinations in their own right and make great hubs if you want to make a day trip to see Mars Bluff's atomic bomb crater. Read more: Couples Will Swoon Over These ...

Radar scans reveal up to 2.2 miles of subsurface ice beneath Mars’s Medusae Fossae, per Geophysical Research Letters. The formation was long thought to be loose ash or dust—but its low density ...