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tag: low-earth-orbit

Posts Tagged ‘Low Earth Orbit’

Electric Rockets Set To Transform Space Flight

Tuesday, February 21st, 2012
no pic yet.

An anonymous reader sends this quote from an article at Txchnologist:
“The spectacle of a booster rocket lifting off a launch pad atop a mass of brilliant flames and billowing smoke is an iconic image of the Space Age. Such powerful chemical rockets are needed to break the bonds of Earth’s gravity and send spacecraft into orbit. But once a vehicle has progressed beyond low-earth orbit chemical rockets are not necessarily the best way to get around outer space. That’s because chemical propulsion systems require such large quantities of fuel to generate high speeds, there is little room for payload. As a result rocket scientists are increasingly turning to electric rockets, which accelerate propellants out the back end using solar-powered electromagnetic fields rather than chemical reactions. The electric rockets use so much less propellant that the entire spacecraft can be much more compact, which enables them to scale down the original launch boosters.”

Read more of this story at Slashdot.



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What If the Apollo Program Never Happened?

Monday, January 30th, 2012
no pic yet.

astroengine writes “In a recent debate, Republican presidential candidate Newt Gingrich said he would like to beat the Chinese back to the moon. He has even been so bold as to propose setting up a manned base by 2020, driven by empowering private industry to take the initiative. It’s ironic to hear moon travel still being debated 40 years after the last Apollo landing in 1972. Between then and now, NASA’s small space shuttle fleet filled in for space travel, but astronauts could only venture as far a low earth orbit — at an altitude much lower than the early pioneers reached. If there were no Apollo crash program to beat the Soviets to the moon, would we have planned to go to the moon eventually? But this time with a commitment of staying? Or would we never go?”

Read more of this story at Slashdot.



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