Why did NASA’s rover just find a cannonball on Mars?

Humanity has still yet to find real, concrete, scientifically-supported evidence of extraterrestrial life. We’ve gotten pretty close, and discovered some chemical markers and other indications that might suggest life once existed somewhere other >>

NASA’s new titanium tires can never get a flat

Ever since man started thinking about putting things on other planetary bodies, transport has been a concern. Wheels are the obvious means of getting around, but using a standard air-filled rubber tire presents >>