RHESSI (Reuven Ramaty High Energy Solar Spectroscopic Imager)
A NASA satellite designed to explore the basic physics of particle acceleration
and energy release in solar flares.
It carries out simultaneous, high resolution imaging and spectroscopy of
flares from 3 keV X-rays to 20 MeV gamma
rays with high time resolution. RHESSI, known originally as just HESSI,
is the fourth SMEX (Small Explorer) mission.
HESSI's launch by a Pegasus XL, scheduled for June 2001, was postponed following
the loss of an X-43A experimental plane due to the failure of a similar
||Feb. 5, 2002
||circular 600 km × 38°
AND SPACE PROBES