Launch of a SpaceX Falcon 9 rocket carrying a Dragon cargo ship loaded with more than 5,100 pounds of equipment and supplies bound for the International Space Station was called off Tuesday less than two minutes before liftoff because of apparent problems with the second stage engine steering system.
Boosted to an altitude of 3,604 miles by a Delta 4 rocket, NASA’s Orion deep space exploration vehicle fell back to Earth Friday in the program’s maiden voyage, slamming into the atmosphere at nearly 20,000 mph, enduring a hellish 4,000-degree re-entry and settling to a Pacific Ocean splashdown to wrap up a critical unmanned test flight.
A few moments after the pirouette, battery voltage suddenly plummeted and engineers said the end was near. Trapped between a rock and a dark place beyond its ability to survive, Philae dutifully sent back stored data and even made fresh measurements until finally, just after 7:30 p.m. (EST-5), contact was finally lost.
Trapped in rough, forbidding terrain with its solar panels draped in shadow, the Philae comet lander raced the clock Friday to carry out high-priority science operations, including an attempt to drill into the surface of the nucleus, before exhausting its on-board batteries and effectively losing consciousness.
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