NASA says the launch of their test vehicle from Kauai has been postponed again.
Officials believe weather conditions will allow for a Saturday launch.
The vehicle will be lifted 120,000 feet with the help of a helium balloon.
From there a rocket booster will carry it to 180,000 feet where the thin atmosphere resembles Mars.
As the vehicle falls to Earth, a giant parachute should pop out and guide it to land in the ocean.
The launch is designed to test a bigger, stronger parachute for a mission to Mars.