The SRBs are solid rockets that provide most of the main force or thrust (71 percent) needed to lift the space shuttle off the launch pad. In addition, the SRBs support the entire weight of the space shuttle orbiter and fuel tank on the launch pad. Each SRB has the following parts: so...
Mike Mullane, an inductee in the International Space Hall of Fame, notes that many people were as qualified to be an astronaut as he was, yet he got the job while they did not. "If you're an astronaut, you had an element of luck that put you there," he says....
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Did you know, for example, that hi-tech clothes washing machines have accelerometers that can detect when the load is out of balance and switch off the electric motor to stop them from spinning themselves to pieces? [1] How about detecting when elderly people have fallen or sensing when ...
How did we learn the speed of light? Aristotle, Empedocles, Galileo (illustrated here), Ole Rømer and countless other philosophers and physicists in history have contemplated the speed of light.(Image credit: NASA) As early as the 5th century BC, Greek philosophers like Empedocles and Aristotl...
How did we arrive at a point where virtually everything we buy is marked with a barcode? Here are some of the key moments in barcode history: 1948: Bernard Silver (1924–1963) and N. Joseph Woodland (1921–) get the idea for developing grocery checkouts that can automatically scan produ...
Over time, NASA missions evolved and so, too, did the qualifications for becoming an astronaut. By 1964, emphasis had shifted away from flight experience and toward superior academic achievement. The first scientist-astronauts joined the program in 1965 to deepen knowledge of geology, astronomy, ph...
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THE ROCKET- FROM EAST TO WEST AThe greatest outcome of the discovery of the reaction principle was that A rockets could be propelled into the air. B space travel became a reality. C a major problem ha...