NASA will announce finalist concepts for a future robotic mission to explore the solar system during a media teleconference at 2 p.m. EST Wednesday, Dec. 20. The mission, targeted to launch in the mid-2020s, would be the fourth in NASA’s New Frontiers portfolio – a series of cost-capped missions led by a principal investigator. Current NASA will announce finalist concepts for a future robotic mission to explore the solar system during a media teleconference at 2 p.m. EST Wednesday, Dec. 20. The mission, targeted to launch in the mid-2020s, would be the fourth in NASA’s New Frontiers portfolio – a series of cost-capped missions led by a principal investigator. Current