WASHINGTON, Jan. 28 /PRNewswire/ -- Flying near the edge of space, a NASA
scientific balloon broke the flight record for duration and distance. It
soared for nearly 42 days, making three orbits around the South Pole.
The record-breaking balloon, almost as large as one and one half football
fields, carried the Cosmic Ray Energetics And Mass (CREAM) experiment. CREAM
is designed to explore the supernova acceleration limit of cosmic rays, the
relativistic gas of protons, electrons and heavy nuclei arriving at Earth from
outside the solar system.
In addition to gathering scientific data, the flight was a demonstration
of the capabilities of the NASA Ultra-Long Duration Balloon (ULDB) support
system. The ULDB is being developed to extend flights up to 100 days.
The pilot-less, helium-filled scientific balloon was launched from the
National Science Foundation's McMurdo Station, Antarctica on Dec. 16, 2004.
The balloon traveled 41 days and 22 hours. It landed on January 27, 660
kilometers (410 miles) from McMurdo Station. Payload recovery operations are
in progress.
The previous endurance record for a balloon flight was in December 2001
from McMurdo. The flight orbited the South Pole twice over 31 days, 20 hours.
The CREAM mission extended the continuous science observation time over
previous balloon missions.
"We are excited with the duration of this flight, which allowed scientists
to get ample data to perform their studies," said David Pierce, Chief of the
Balloon Program Office at NASA's Goddard Space Flight Center's Wallops Flight
Facility, Wallops Island, Va. "We routinely have long duration balloons that
float for up to two weeks, but to have one flight last more than 41 days is
very rewarding," he added.
Scientific balloons are made of thin polyethylene material, about the same
thickness as ordinary sandwich wrap. An enormous balloon was needed to hoist
the two-ton CREAM experiment to about 38,100 meters (125,000 feet). NASA's
balloon expanded to a diameter of more than 137 meters (450 feet) and weighed
1,839 kilograms, (4,055 pounds).
"Balloon-borne detectors, flying at the top of the atmosphere, can
identify incoming particles before they are broken up in collisions with air
nuclei," said Eun Suk Seo, the Principal Investigator for CREAM at the
University of Maryland, College Park, Md. "The science instrument, support
systems, and operation scheme were successfully tested throughout this record
breaking flight. We are ready for a ULDB flight," Seo added.
"These state-of-the-art particle detectors were for the most part built in
university laboratories by students, young scientists and engineers", said Dr.
W. Vernon Jones, Senior Scientist for Suborbital Research at NASA
Headquarters. "Hands-on training while conducting frontier research is a major
strength of using balloons for research," he said.
Personnel from the National Scientific Balloon Facility (NSBF), Palestine,
Texas annually support approximately 25 NASA balloon flights from sites
worldwide. They conducted the launch, flight, and recovery operations of the
CREAM balloon mission. "We are really proud of our crew in Antarctica," said
Danny Ball, Site Manager of the Texas facility. "Everyone at NSBF contributed
to this success, but the crew that spent Thanksgiving, Christmas, and New
Years on the ice deserves most of the credit for a great mission and yet
another record flight," he added.
The National Science Foundation Office of Polar Programs provided
Antarctica ground and air operations support.
The CREAM experiment is collaboration among the University of Maryland,
the University of Chicago, Penn State University, universities and
organizations in Italy, Korea, France and Mexico. Wallops manages NASA's
Scientific Balloon Program for the Science Mission Directorate, NASA
Headquarters.
For information about NASA's Scientific Balloon Program on the Internet,
visit:
http://www.wff.nasa.gov/~code820/
For pictures and information on the CREAM mission on the Internet, visit:
http://cosmicray.umd.edu/cream/CREAMflight.htm
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