what would happen if all of a sudden we lost gravity ?

Question: what would happen if all of a sudden we lost gravity ?
- Keywords:
  gravity,
  space
Asked by nicenadia to Alessandro, Angela, Claudia, Marina, Phil on 11 Mar 2013.
- Phillip Wilkinson answered on 11 Mar 2013:
  
  Since gravity is generated by mass it would be very worrying as it would probably mean the Earth, Sun and all other large collections of mass have disappeared!
- Claudia Krehl answered on 11 Mar 2013:
  
  However, it would be quite cool if we could all experience the sense of weightlessness. Astronauts get trained on airplanes to do exactly that.
  
  Check it out: http://reducedgravity.jsc.nasa.gov/

Question: what would happen if all of a sudden we lost gravity ?