Investigators began studying the telemetry from the Antares rocket that exploded on launch Tuesday night and began the painstaking job of combing through potentially dangerous debris at daybreak Wednesday.

Carrying 5,000 pounds of supplies and scientific equipment, the unmanned Orbital Sciences Corp.’s Cygnus cargo craft and the Antares rocket it was riding exploded just after launch launch at 6:22 p.m. ET on Tuesday.

The lost rocket and cargo craft cost more than $200 million, the company reported. It’s unclear how much it will cost to repair the damaged launch facility.

The spacecraft had just lifted off to start its third re-supply mission to the International Space Station when it paused, began to fall and then exploded at NASA’s Wallops Flight Facility in Virginia.

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