Deep Space Climate Observatory (DSCOVR) (formerly known as Triana, unofficially known as GoreSat) is a NOAA Earth observation and space weather satellite.
It was originally developed as a NASA satellite proposed in 1998 by then-Vice President Al Gore for the purpose of Earth observation. It is intended to be positioned at the Sun-Earth L1 Lagrangian point, 1,500,000 kilometres (930,000 mi) from Earth, to monitor variable solar wind condition and provide early warning of approaching coronal mass ejections. At this location it will have a continuous view of the Sun and the sunlit side of the Earth.
Additional payloads launching aboard the Falcon 9: Sunjammer and SHERPA
* Launch window: 2310 UTC (6:10 pm EST)