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![]() In the novel, Verne correctly predicts that the three men traveling in a projectile to the moon would experience a weightless state. Being a formidable writer, he does a great job of describing it!
However, Verne wrote that the men would only achieve a state of weightlessness at the point in the journey where the Earth's gravitational pull and the moon's pull canceled each other out. And, as we know, even shuttle astronauts in orbit a mere 250 miles from the Earth experience weightlessness.
Astronauts in orbit are still subject to Earth's gravity; but they (and the space craft) are constantly falling toward the Earth and thus are weightless. More recently, the term microgravity has been used to describe the weightless state in an orbiting spacecraft. Physicists note that orbiting astronauts experience tidal forces because the gravitational force varies infinitesimally over the distance from head to toe (when pointing straight away from the Earth). Also, if the orbit is low enough to encounter even the slightest amount of atmosphere, the drag on the spacecraft will provide a slight deceleration due to friction.
In 1638, The Man in the Moone by Bishop Francis Godwind, was published posthumously. It contains what appears to be the first account of the concept of weightlessness. Comment/Join this discussion ( 3 ) | RSS/XML | Blog This | Additional
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Science Fiction
Timeline
Heart Patches Grown In The Lab Repair Hearts
I'm hoping that this procedure becomes a normal part of medical practice!
Humanoid Robots Spotted In Homes Performing Household Chores
'... nothing was perfected until M. Pantalon announced the completion of his automatic valet.'
Musk Proposes Sites For Martian Cities
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'
Robot Collective Acts Like A Smart Material
'...it was all composed of tiny, identical cubes, carefully laid to form a tilelike surface.'
Pixel Watch 'Loss of Pulse Detection' And Philip K. Dick
'He carried on his person a triggering mechanism sensitive to his heartbeat.'
Nuclear Plant Restarted To Power AI To Feed Us Dreams
'...Anything was possible in my imaginary environment.'
SpaceX's Starman Tesla Roadster In Space
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.'
Pivotal Blackfly Electric Aircraft Lifts And Hovers
'That explains how it was so easy for me to remain motionless in midair...'
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