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What's five times hotter than the sun and capable of sending a DeLorean back to the future? Yep, the answer is a bolt of lightning, which can reach temperatures of roughly 30,000 kelvins (53,540 degrees Fahrenheit). The sun, on the other hand, is eclipsed in this case - its surface temperature is just 6,000 kelvins (10,340 degrees Fahrenheit).
The speed of a bolt of lightning changes slightly with atmospheric variables such as temperature, pressure and humidity. The flash is the only characteristic of lightning that travels at the speed of light, which is approximately 186,282 miles per second or 670,616,629 miles per hour.