NASA's Curiosity rover has captured countless strange-looking rocks during its years exploring Mars. Waring even speculated the mysterious object could represent advanced extraterrestrial weapon technology that governments would rush to obtain if it were ever recovered. Earlier this month, Waring shared another mysterious Mars photo he claimed showed a dwelling on the Red Planet. We had them on Earth long ago, and they had them on Mars long ago,' Waring said. Curiosity rover is a car-sized, nuclear-powered robot searching for signs of life and learning about the Red Planet's unique environment.