habitable zone

mars-surface.jpg
Rough rocky mars landscape from above.
Licensed from Adobe Stock

Are We Alone?

The American taxpayers recently footed the bill for a risky $800 million NASA mission. The good news? It worked. In January, two NASA landers bounced to their destinations and released their rovers Spirit and Opportunity to prowl the Martian landscape. These remarkable little robots were not searching for archaeological ruins or strange, black monoliths but something much less exotic — Read More ›