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  2. Zero Gravity Research Facility - Wikipedia

    en.wikipedia.org/wiki/Zero_Gravity_Research_Facility

    The Zero Gravity Research Facility was built in 1966 as part of NASA's Centaur upper-stage rocket development program. In order to ensure proper firing and functioning of upper-stage rockets, NASA needed to understand the behavior of fluids (importantly, the liquid gases fueling the rockets), in the reduced gravity where they would fire.

  3. Weightlessness - Wikipedia

    en.wikipedia.org/wiki/Weightlessness

    In the left half, the spring is far away from any gravity source. In the right half, it is in a uniform gravitation field. a) Zero gravity and weightless b) Zero gravity but not weightless (Spring is rocket propelled) c) Spring is in free fall and weightless d) Spring rests on a plinth and has both weight 1 and weight 2.

  4. Effect of spaceflight on the human body - Wikipedia

    en.wikipedia.org/wiki/Effect_of_spaceflight_on...

    American astronaut Marsha Ivins demonstrates the effects of microgravity on her hair in space. The effects of spaceflight on the human body are complex and largely harmful over both short and long term. [1] Significant adverse effects of long-term weightlessness include muscle atrophy and deterioration of the skeleton (spaceflight osteopenia). [2]

  5. Gravitational singularity - Wikipedia

    en.wikipedia.org/wiki/Gravitational_singularity

    The idea can be stated in the form that, due to quantum gravity effects, there is a minimum distance beyond which the force of gravity no longer continues to increase as the distance between the masses becomes shorter, or alternatively that interpenetrating particle waves mask gravitational effects that would be felt at a distance.

  6. Space adaptation syndrome - Wikipedia

    en.wikipedia.org/wiki/Space_adaptation_syndrome

    Space adaptation syndrome or space sickness is a kind of motion sickness that can occur when one's surroundings visually appear to be in motion, but without a corresponding sense of bodily motion. This incongruous condition can occur during space travel when changes in g-forces compromise one's spatial orientation. [5]

  7. Reduced-gravity aircraft - Wikipedia

    en.wikipedia.org/wiki/Reduced-gravity_aircraft

    Incredible Adventures is a Florida company established in 1995, offering private zero-gravity flight training in Tampa, Florida; About the NASA Reduced Gravity Research Program; Vegitel ltd is a Russian company that offers zero-gravity flights in an IL-76 MDK wide-body aircraft; Virtual tour of the Airbus A-300 Zero-G.

  8. SpaceX launches “limitless” ‘zero fuel’ engine into space

    www.aol.com/spacex-launches-limitless-zero-fuel...

    SpaceX has launched a new type of zero-fuel propulsion system into orbit, which its creators claim will revolutionise the space industry.. The Quantum Drive engine, built by US startup IVO Ltd ...

  9. Mars sol - Wikipedia

    en.wikipedia.org/wiki/Mars_sol

    It is approximately 24 hours, 39 minutes, 35 seconds long. A Martian year is approximately 668.6 sols, equivalent to approximately 687 Earth days [ 1 ] or 1.88 Earth years. The sol was adopted in 1976 during the Viking Lander missions and is a measure of time mainly used by NASA when, for example, scheduling the use of a Mars rover .