THIS WEEK ON GALILEO
                             April 14-20, 1997

The fields and particles survey of the magetosphere continues in this, the
second week of "cruise" following Galileo's last encounter with Ganymede. In
addition to playback, this week's activities include a spacecraft turn
(Friday) to keep the spacecraft's antenna pointed near the Earth and the
transmission of commands (Sunday) required to execute the next orbit trim
maneuver which will occur early next week.

Observations from the spacecraft's non-targeted flyby of Europa seem to be
one of the main spotlights of this week's playback. NIMS (Near Infrared
Mapping Spectrometer) returns an observation taken at regional resolution as
part of the tour-long campaign to completely map all Galilean satellites.
This portion of the map is centered around the lineated feature known as
Flexus Linea. PPR (Photopolarimeter Radiometer) returns various thermal
observations including both dayside and darkside maps. SSI (Solid State
Imaging camera) returns low solar phase angle photometry (measurements of
the intensity of light) observations and observations of crater features
near the terminator (the dividing line between day and night). Of particular
interest is a NIMS observation of the region known as Tyre Macula. This
observation aims to search for differences in the mineral compostion of the
region in an attempt to understand the origin of this circular feature. A
set of observations of this region was coordinated amongst all four remote
sensing instruments (UVS, PPR and SSI).

The playback schedule also includes the transmission of Jupiter observations
taken by NIMS and PPR. NIMS will return obseravtions of the small red spot
featured in this past encounter and of a hot spot near the same latitude as
that of the atmospheric probe entry site. PPR also returns observations of
the small red spot, but also returns a couple of observations taken of the
Great Red Spot. Io observations by NIMS (thermal and chemical), SSI
(topographical) and PPR (thermal) continue to be returned during the week.
Finally, a global observation by NIMS and a thermal observation by PPR, both
of Ganymede, complete the playback plans for this week.

For more information on the Galileo spacecraft and its mission to Jupiter,
please visit the Galileo home page:

http://www.jpl.nasa.gov/galileo/