After a couple of days delay, NASA has launched five suborbital rockets.

The rockets will study the upper level jet stream.

The rockets began blasting off Tuesday morning from a NASA space center in Virginia. Bad weather had postponed other planned launches last week.

The Anomalous Transport Rocket Experiment will help scientists understand the jet stream, which is located 60 to 65 miles (96 to 104 kilometers) above Earth’s surface.

After launching, the rockets released a chemical tracer to form white clouds that allowed scientists and the public to visualize the winds.