Video: Delta 2/SMAP pre-launch news conference

SpaceX launched a reduced two-man crew on a flight to the International Space Station Saturday, along with supplies and a pair of empty seats for two Starliner astronauts waiting to hitch a ride home in February after an unexpected eight-and-a-half-month stay in orbit.

With five side-mounted solid rocket boosters for added power, a United Launch Alliance Atlas 5 rocket successfully deployed the U.S. Navy’s fifth MUOS mobile communications satellite.

NASA announced Thursday it will fund four concept studies for potential robotic missions to Venus, Jupiter’s moon Io and Neptune’s moon Triton ahead of a decision next year to approve up to two of the projects for launch in the mid-to-late 2020s.