First stage recovery failed; the rocket stage landed on the target drone ship too fast, tipped over, and exploded.
All secondary payloads will be deployed from an ISS airlock at a later date. Arkyd 3 Reflight is a replacement for Arkyd 3, which was lost in the Cygnus CRS Orb-3 flight accident in 2014.
The New Horizons spacecraft is scheduled to fly by Pluto in July 2015.
Apogee: , 13 Super Loki meteorological rockets were also launched
Delivering the IDA-2 segment of the NASA Docking System
First communication satellites to use all-electric propulsion to reach intended orbits from GTO
SpaceX attempted to land the first stage on a platform in the Atlantic Ocean, but the first stage crash-landed on its landing platform. CubeSats to be deployed from the International Space Station at a later date.
Manned flight with three cosmonauts, including spaceflight participant Sarah Brightman and Andreas Mogensen, the first Dane in space.
First SpaceX launch aimed beyond GTO. First stage soft landed on water.
Vega's 4th stage briefly entered low Earth orbit before de-orbiting.

Andy Gibb publicity photo for Solid Gold

Inaugural flight from the Vostochny Cosmodrome
First launch of the new Progress-MS variant.
Manned flight with three cosmonauts, including two on a year-long mission
Delivering the IDA-1 segment of the NASA Docking System