Q: How fast is the speed of light?
A: 186,000 mi/sec
Q: How much light hits Earth per year?
A: 197 million square miles
Q: How much Solor energy hits the Earth?
A: 12.2 trillion watt-hours per square mile per year
A: 186,000 mi/sec
Q: How much light hits Earth per year?
A: 197 million square miles
Q: How much Solor energy hits the Earth?
A: 12.2 trillion watt-hours per square mile per year