Washington
Post: The old rover was supposed to work for only 90 days,
enough time to crawl two-thirds of a mile across the Martian
desert. More than five years later, Spirit has put five miles
on its odometer and is still rolling along -- but getting
mighty cranky.
The rover, one of two NASA vehicles operating on Mars, has a broken right wheel. It has dust on its solar panels. It's operating at about 30 percent of normal power. Various sensors and software programs have gone screwy.
Then, on April 9, Spirit refused to wake up. The rover is designed to sleep at night, when there is no sunlight hitting the solar panels. But Spirit snoozed right through its wake-up call. It happened three times in succession. Finally a backup timer got Spirit up and moving again after a 27-hour slumber.
