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| Solar cells were mounted
along the outside of the cylinder and
provided power to the chemical batteries
stored inside the spacecraft. Jalousies
for thermal control were also positioned
along the cylinder and would open to
expose a radiating surface when the
interior temperature exceeded 25 degrees
C. The upper hemisphere of the probe held
the covered opening for the cameras. Four
antennae protruded from the top of the
probe and two from the bottom. Other
scientific apparatus (micrometeoroid and
cosmic ray detectors) was mounted on the
outside of the probe. Gas jets for
attitude control were mounted on the
outside of the lower end of the
spacecraft. Photoelectric cells were used
to maintain orientation with respect to
the Sun and Moon. The spacecraft had no
rockets for course adjustment. |
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