Slashdot - Mars Rovers Return to Exploration: “Typically, the solar panels on each rover produce about 700 watt-hours of electricity per day — enough to light a 100-watt bulb for seven hours, according to NASA.”
Honestly I didn’t think that the fact that multiplying 100 watts times 7 hours yields 700 watt-hours was so controversial that stating it needed qualifying the statement with “according to NASA”. What about the square root of 2 being approximately 1.4142 “according to Archimedes”? 
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