The Curiosity rover continues to capture fascinating anomalies on the Martian surface. In this instance, researcher Jean Ward has examined a particularly intriguing discovery: a disc-shaped object embedded in the side of a mound or hill. The image…
Where do asteroids and planets get all those craters? Countless small circular craters, plus almost always a few that look like massive killers. Even more confusing is that these craters are at a perfect 90º angle, as if an electric arc had run across …