SpaceX CRS-7, also known as SpX-7,[1] was a private American Commercial Resupply Service mission to the International Space Station, contracted to NASA, which launched and failed on June 28, 2015.

[5] The spacecraft was planned to stay in orbit for five weeks before returning to Earth with approximately 1,400 pounds (640 kg) of supplies and waste.

Subsequent investigation traced the accident to the failure of a strut that secured a high-pressure helium bottle inside the second stage's liquid oxygen tank.

The COPV bottle containing helium had broken loose and struck the upper dome of the oxygen tank with catastrophic effect.

[9] NASA contracted with SpaceX for the CRS-7 mission and set the primary payload, date/time of launch, and orbital parameters for the Dragon space capsule.

A full listing of the cargo aboard the failed mission included:[13] The mission would have transported more than 4,000 pounds (1,800 kg) of supplies and experiments to the International Space Station including the Meteor Composition Determination investigation which would have observed meteors entering the Earth's atmosphere by taking high resolution photos and videos.

[5] CRS-7 would have brought a pair of modified Microsoft HoloLenses to the International Space Station as part of Project Sidekick.