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June
7, 2002
Goddard Scientists Present Findings at Summer AAS Meeting
A number Goddard
scientists presented findings at this year's American Astronomical
Society summer meeting in Albuquerque, NM. Listed below are the
topics of findings, click on the heading for the complete article
and images.
Hot,
Young Stars Cool Down a Bit
The most massive,
hottest stars in the Universe are not as hot as we thought, according
to new research by NASA-sponsored astronomers. The result was obtained
by comparing a sophisticated new model of stellar atmospheres to
recent observations of young, massive stars in the Small Magellanic
Cloud, a nearby galaxy. The observations were obtained using a pair
of NASA spacecraft: the Hubble Space Telescope and the Far Ultraviolet
Spectroscopic Explorer (FUSE). Dr. Sara Heap, an astronomer
at Goddard on how the results will help with the understanding of
how young massive stars and their nearby galaxies evolve.
RHESSI
Captures New Light From Sun, Reveals Surprises in Solar Flares
The Sun emits
strong, localized bursts of high energy X-rays before the UV brightening
of large solar flares and high energy X-rays are constantly emitted
from active regions and elsewhere on the Sun.
These and other
initial results from the Ramaty High Energy Solar Spectroscopic
Imager (RHESSI) were reported by scientists from the University
of California at Berkeley, Goddard and other institutions.
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