NASA is again rescheduling the launch of five rockets from Virginia due to bad weather.
The rockets are part of a study of the jet stream.
The launch had been set for Thursday at NASA's space center on Wallops Island but has now been pushed back to early Friday. Bad weather has postponed the launch several times.
The Anomalous Transport Rocket Experiment (ATREX) will help scientists understand the jet stream, which is located 60 to 65 miles above Earth's surface.
The rockets will release a chemical tracer to form white clouds that allow scientists and the public to visualize the winds. Residents from South Carolina to southern New Hampshire and Vermont might be able to see the clouds for up to 20 minutes.
NASA's ATREX mission: http://www.nasa.gov/mission_pages/sunearth/missions/atrex.html
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