Scientists and engineers are going to attempt to fly a human-carrying glider to the edge of space.
The flight will take off from Patagonia, Argentina and they will attempt to break a world record, according to Live Science.
If the flight is successful, it will beat the world altitude record for a fixed-wing aircraft, which is currently 85,068 feet and was set 50 years ago.
The expedition, named Perlan Mission II, aims to reach 90,000 feet. The project is also designed to study the layers of the earth's atmosphere.
They aim to measure electromagnetic fields, pressure, ozone and methane levels.
In order to reach this height, the glider has been built to take advantage of stratospheric mountain waves. The waves are formed when large, low-pressure and cold air systems reach peak strength.
Conditions for this are usually ideal in August and September, and they are waiting for conditions to be perfect.