Space Shuttle Endeavour wouldn't have been able to lift off this morning from the Kennedy Space Center without a bit of fuel. The external tank attached to the orbiter contains both a liquid hydrogen fuel and a liquid oxygen oxidizer that it feeds into the orbiter's three main engines during flight. This video, from ITN News, shows some of the equipment that was used to fill the tank right before the scheduled event.
Led by astronaut Mark Kelly, husband of Congresswoman Gabrielle Giffords, Endeavour's final flight -- and the program's penultimate flight, with Atlantis scheduled to fly in June -- will take it to the International Space Station (ISS). Endeavour is making a stop at the ISS to deliver a $2 billion piece of equipment that is critical for many science experiments conducted by NASA.
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