Curiosity: the desire to learn or know about anything; inquisitiveness.
Curiosity: a strange, curious, or interesting quality.
Curiosity: The Curiosity rover is a nuclear-powered Mars rover that is part of NASA's Mars Science Laboratory (MSL) mission by the United States. Curiosity carries the most advanced payload of scientific equipment ever used on the surface of Mars. The MSL spacecraft—with its payload Curiosity—was launched on November 26, 2011 and successfully landed on Aeolis Palus in Gale Crater on August 6, 2012.