Martian Dust Devils seem to have strange and fabulous capabilities. Here, one seems to have etched a tight, spiral trail, left a circle, and then corkscrewed
A Johns Hopkins University press release: Mars once hosted vast lakes, flowing rivers and a variety of other wet environments that had the potential to support
David >>> Exactly. That's why astronomers are now busily inventing new computer models--in other words, adding new variables to an already overburdened