For Immediate Release

FAIRBANKS, Alaska—Four NASA rockets launched from Poker Flat Research Range during a three-hour span on the morning of Feb. 18, 2009. The rockets, carrying payloads that emitted glowing vapor trails that help scientists study turbulence in the upper atmosphere, launched at 12:59

a.m., 1:29 a.m., 1:59 a.m., and 2:49 a.m. Alaska Standard Time. The whitish trails, some resembling corkscrews in the sky, were visible in many parts of interior and northern Alaska.