Washington: NASA has announced a state-of-the-art mission to Mars, taking a new step towards humanity's space dreams. The mission, codenamed Skyfall, is scheduled to launch in December 2028. The biggest feature of this mission is that it is the first interplanetary spacecraft to be powered by nuclear power. NASA hopes that this spacecraft, called Space Reactor-1 Freedom (SR-1 Freedom), will become a guide for future space travel.