It has long been known that microgravity takes a toll on the human body. Muscles atrophy, the eyes are subjected to increased intracranial pressure, bones lose mass. A prolonged period in weightlessness may result in permanent bone loss and make it difficult to survive in Earth’s gravity. Yet although a number of plans have been proposed for artificial gravity in deep space missions, NASA, at present, does not appear to have plans to use artificial gravity on a mission to Mars.
On May 14, 1973, long before the era of the International Space Station (ISS), the United States launched its first space station, Skylab, into orbit on the last Saturn V rocket to be sent aloft. Between May and November of that year, three crews visited the station. Although Skylab was significantl...
20:08 Month in Space: November 201612