Video: Time lapse of ATV’s final departure from ISS

Something went wrong with a Russian Progress cargo spacecraft moments before it deployed into orbit Tuesday on the way to the International Space Station, and investigators are analyzing whether the stricken supply ship may have lost control after a botched separation from its Soyuz rocket booster.

Two days after launching from Cape Canaveral with nearly 5,500 pounds of supplies and experiments, an automated SpaceX Dragon cargo craft approached the International Space Station Monday. The Dragon supply ship was grappled by the station’s robotic arm at 7:01 a.m. EDT (1101 GMT).

After prepping their patient — a $2 billion cosmic ray detector — during two earlier spacewalks, two space station astronauts ventured back outside for a third outing Monday to carry out what amounted to transplant surgery, installing replacement coolant pumps in a bid to revive the costly instrument and extend its life.