“Beliefs are personal, but universal truths are above that. For example, the surface temperature of the sun is around 5,505 degrees Celsius – the speed of light is around 300,000 kilometers per second – the Earth is about 4.5 billion… — Abhijit Naskar Copy Share Image
“Once the thermal radiation reaches the surface temperature of the Sun-some 6000 degrees Celsius-we perceive it as white light. At still higher temperatures, 8500 degrees Celsius, the light will be blue. Beyond this, thermal radiation passes into the X-ray range.… — Henning Genz Copy Share Image
