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CINEMA FANTASTIC
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by Marcel F. Williams General Motors yesterday introduced the production model for their new plug-in hybrid vehicle (PHEV) which they believ... -
by Marcel F. Williams Tuscany is renowned for its beautiful cities of Florence and Siena, and is historically famous as the birthplace ... -
by Marcel F. Williams Congress has now made it clear that they want the immediate development of a heavy lift vehicle and a crew explorato... -
by Marcel F. Williams On December 17th 1935, the Douglas Aircraft Company introduced an new airplane that revolutionized commercial air trav... -
Mars and its inner moon, Phobos by Marcel F. Williams T he average woman on Earth is born with an approximately 38% chance of devel... -
Buzz Aldrin on the surface of the Moon (Credit: NASA) by Marcel F. Williams I n July of 2016, researchers on the health of NASA astro...
1 comment:
The delta v station keeping requirements for Earth-Moon L1 and L2 are less than 10 meters/second. But the delta v station keeping requirements for L3, L4, and L5 are less than 1 meter/ second.
However a lunar equatorial Distant Retrograde Orbit (DRO) would have station keeping delta v requirements of only a few centimeters/second per year. So DRO is the best place far large rotating space stations and space colonies within cis-lunar space.
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