NASA's Discovery Program is back in full force.
Psyche and Lucy are two probes set for two different missions to Jupiter.
NASA's Discovery Program approved missions on asteroid mining in space.
Lucy, like chimps, may have climbed trees more often than initially thought.
Scientists finally have a theory on how the most famous Australopithecus died nearly 3.2 million years ago.
Five potential missions have been selected by NASA for refinement in 2016, with two getting flight opportunities by 2020.
