At 19:47 EST, the STS-119 mission began with the successful launch of Space Shuttle Discovery from Kennedy Space Center in Florida. The mission had been delayed by a week due to a hydrogen leak outside Discovery’s external fuel tank (compounding the extended delay caused by valve problems), but the fault was repaired, allowing NASA to perform a flawless launch today.
STS-119 will install the fourth and final set of solar arrays to the ISS. In May, the space station crew will grow to six, so additional solar power will be required. Interestingly, once completed, the station will become the second brightest object in the night sky.
Good luck Discovery!
For developing news on STS-119, check out the coverage on the Universe Today »
astroengine.com 
The trail looked really cool from where we live. The sun really lit up the boosters as they fell away too. Very nice launch.