Russia's space agency says an unmanned cargo ship, headed to the International Space Station, has burned up in the atmosphere directly after launching in Kazakhstan. Roscosmos says preliminary information shows the cargo ship's booster exploded Thursday 190 kilometers above the remote, unpopulated mountainous territory of Russia's. It said most fragments burned up in dense layers of the atmosphere. The Russian space agency says the ship was carrying two and a half tons of supplies, including food and fuel. It was to have docked Saturday at the space station. Russia conducts three or four supply missions each year. Typically, the unmanned spacecraft falls back toward Earth after making its delivery before disintegrating in the atmosphere. A similar mishap occurred in April 2015 when another Russian cargo ship failed to launch and burned up in the atmosphere. At that time, Russia was forced to postpone all space travel after the incident for three months while it investigated the problem.