Zero Gravity Corporation (also known as ZERO-G) is an American company based in Arlington, Virginia, formerly of Fort Lauderdale, Florida, USA, which operates weightless flights from United States airports.
Unlike NASA, ZERO-G is governed under Part 121 of FAA regulations (as are all US commercial passenger and cargo airlines) enabling the company to cater to both tourists and researchers alike.
NASA has a microgravity services contract with ZERO-G, which provided the first flights under this contract on September 9 and 10, 2008. Flight time from Ellington Field near Johnson Space Center was provided for the FASTRACK Space Experiment Platform. The flights were funded by NASA's Strategic Capabilities and Assets Program.