The founder of Space X says his company has launched a full investigation of a rocket that exploded on Sunday. Elon Musk said there was too much pressure in a liquid oxygen tank on the rocket. He said his company is investigating the reason for the over-pressurization. The rocket exploded just minutes after it was launched from Cape Canaveral in the U.S. state of Florida.
There were no people on the 63-meter-long rocket. It was carrying almost 2,500 kilograms of food, clothing, equipment and science experiments for the astronauts on the International Space Station.
