NASA’s Curiosity Rover Discovers Spiderweb Ridges on Mars That Hint at Ancient Water

A rugged Martian landscape that resembles a vast spiderweb when seen from orbit is offering new insights into the planet’s watery past. For about six months, NASA’s Curiosity rover has been investigating an area filled with geological features known as boxwork. These formations appear as low, crisscrossing ridges about 3 to 6 feet (1 to [...]