The launch was initially scheduled by NASA to occur no earlier than September 2, 2015. The launch date went under review pending the outcome of the analysis of the failure of the Falcon 9 launch vehicle in SpaceX CRS-7, a June 2015 flight. The return-to-flight (RTF) project included additional improvements.[6]
With additional manifest changes announced by SpaceX in mid-October, CRS-8 was scheduled to be the third launch of the upgraded Falcon 9 full thrust rocket.[7] By March 2016, the launch date was set to April 8, 2016 with a backup launch window the next day.
The spacecraft was finally launched on schedule, at 16:43 local time (20:43 UTC) on April 8, 2016. The rocket first stage separated around 2'40" after liftoff, and the second stage separated around 10'30" after liftoff.
NASA has contracted for the CRS-8 mission from SpaceX and therefore determines the orbital parameters for the primary payload – the Dragon space capsule.
The mission delivered 3,136 kilograms of supplies, experiments, and hardware to the ISS. These include the station's first expandable module, called the Bigelow Expandable Activity Module (BEAM), which is expected to remain on the station for at least two years of observation and testing.[3][8]
First stage of Falcon 9 Flight 23 landed on autonomous droneship
After placing the CRS-8 cargo on its way to the International Space Station, the first stage of the Falcon 9 rocket conducted an experimental boostback and re-entry maneuver over the Atlantic Ocean. Nine minutes after liftoff, at 16:52:10 EDT, the booster landed vertically on the autonomous droneshipOf Course I Still Love You, 300 kilometres (190 mi) from the Florida coastline, achieving a long-sought-after milestone for the SpaceX reusability development program.[5]
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).