SpaceX has launched an investigation into the cause of what happened. The company's CEO Elon Musk was largely silent about the incident until early Friday, when he posted a ****** of tweets, saying it had been "most difficult and complex failure we have ever had in 14 years."
According to Musk, the explosion happened during a "routine filling operation" in which the "engines were **t on and there was ** apparent heat source."* Read more...