Watch the last flight of the Delta II rocket as it puts a laser-pulsing satellite into orbit

Tomorrow morning, a nearly 30-year-old rocket will take its final ride to space. The Delta II, a vehicle manufactured by the United Launch Alliance that first launched in 1989, will fly one last time, sending up an Earth-observing satellite into orbit for NASA. If tomorrow’s mission goes well, it will serve as the 100th successful flight of the Delta II in a row, while bringing an end to a rocket that has launched rovers to Mars and spacecraft to the asteroid belt.
On board this last flig