Understanding the physiology changes to lungs in space travel is essential. Parabolic flights taken by pilots simulate this very well and give us a good understanding.
Washington DC-based 0-G Launch joined forces with the Canary Islands Aeronautical and Aerospace Cluster (CAAC) to bring space weightlessness to Earth. As a result, passengers will be able to take zero-gravity or parabolic flights and float just like an astronaut would in space.