NASA’s $2.5 billion Mars Curiosity rover has experienced a computer issue that has placed the mechanized geologist in a “safe mode,” temporarily curtailing science investigations. The “validation” error, which occurred late March 17, is hindering full recovery from the loss earlier this month of the “A side” of the mission’s redundant flight computer, which may have been caused by radiation, according to Curiosity Project Scientist John Grotzinger. “This is not something which is ...

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