NASA head: Space station hole cause will be determined

The head of the U.S. space agency said that he's sure that investigators will determine the cause of a mysterious hole that appeared on the International Space Station, which his Russian counterpart has said was deliberately drilled. NASA Administrator Jim Bridenstine also said that collaboration with Russia's Roscosmos remains important, despite recent comments by agency head Dmitry Rogozin that Russia wouldn't accept a'second-tier role' in a NASA-led plan to build an outpost near the moon. The hole that appeared in a Russian Soyuz capsule docked to the ISS caused a brief loss of air pressure in August before being patched. Sabotage: Russian astronaut Sergei Prokopyev showed the original'drilled hole' during a video released by the space agency Roscosmos The incident sparked wide speculation and consternation. 'I strongly believe we're going to get the right answer to what caused the hole on the International Space Station and that together we'll be able to continue our strong collaboration,' Bridenstine said.