Workers in the Payload Hazardous Servicing Facility watch as the Stardust spacecraft is rotated and lowered before deploying the solar panels for lighting tests. Stardust is scheduled to be launched aboard a Boeing Delta II rocket from Launch Pad 17A, Cape Canaveral Air Station, on Feb. 6, 1999, for a rendezvous with the comet Wild 2 in January 2004. Stardust will use a substance called aerogel to capture comet particles flying off the nucleus of the comet, plus collect interstellar dust for later analysis. The collected samples will return to Earth in a sample return capsule (seen on top of the spacecraft) to be jettisoned as it swings by Earth in January 2006