— ABC News (@ABC) September 1, 2016
An explosion occurred during a SpaceX fueling operation at its launch site in Florida around 9:07 a.m. Eastern time today, destroying a satellite that Facebook intended to use to provide internet connectivity to rural Africa, SpaceX officials and local authorities said....
The explosion was felt around the facility, and a mushroom cloud could be seen over the launch site, the engineer told ABC News.
SpaceX CEO Elon Musk tweeted that the loss of the Falcon rocket today, "Originated around upper stage oxygen tank. Cause still unknown. More soon."