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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).
Rating Newest Oldest. Best Answer: A bolt of lightning can travel at a speed of 45 km/s (100,000 mph, 160,000 km/h). It can reach temperatures approaching 28,000 Â°C (50,000 Â°F), hot enough to fuse soil or sand into glass channels. Source(s): appsptspcl Â· 8 years ago.