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12.2 trillion watt-hours converts to 12,211 gigawatt-hours, and based on 8,760 hours per year, and 197 million square miles of earthâs surface (including the oceans), the earth receives about 274 million gigawatt-years of solar energy, which translates to an astonishing 8.2 million âquadsâ of Btu energy per year.
Russian Meteor Largest To Hit Earth In Over 100 Years; NASA Revises Estimate. The meteor that exploded over the Ural Mountains in central Russia, Friday, injuring more than 1,000 people is the largest to hit Earth in a 100 years, NASA said in a report.