An exhaust cloud billowed around Launch Pad 39A at NASA's Kennedy Space Center in Florida as space shuttle Discovery lifted off to begin the STS-131 mission. The seven-member crew will deliver the multi-purpose logistics module Leonardo, filled with supplies, a new crew sleeping quarters and science racks that will be transferred to the International Space Station's laboratories. The crew also will switch out a gyroscope on the station's truss, install a spare ammonia storage tank and retrieve a Japanese experiment from the station's exterior. Image Dredit: NASA/Tony Gray and Tom Farrar
