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RISE (Rotation and Interior Structure Experiment)
RISE uses the lander's X-band radio link for Doppler tracking of the lander's location with an accuracy of a handful of cm.
Since the lander is attached to the planet, this allows the measurement of the rotation of Mars, and particularly variations in its rotation axis.
These rotational variations are related primarily to the size and state of the core, through its effect on the moment of inertia and damping of Mars.
Science team led by JPL.
RISE (Rotation and Interior Structure Experiment) (X-Band Transponder - SDST)
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Last Updated: 15 Jul 2014