NASA's
Mars Exploration Rover Spirit
NASA mission controllers have not heard from the Mars Exploration Rover
Spirit since March 22, and the rover is facing its toughest challenge
yet -- trying to survive the harsh Martian winter. During hibernation,
the rover suspends communications and other activities so available
energy can be used to recharge and heat batteries, and to keep the
mission clock running.
For more information, see:
http://www.nasa.gov/rovers
NASA's Top New
Discovery - Evidence of Subsurface Water on Mars
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