On June 28, SpaceX experienced a rocket failure when its CRS-7 mission rocket exploded shortly after taking off. The rocket had been on its way to the International Space Station as part of a resupply mission when the unfortunate explosion took place. SpaceX started an investigation into the cause, but the damage had already been done. Today NASA revealed how much the explosion cost it: $110 million. Questions were also raised about whether SpaceX should be the one investigating its own failure.