Temperatures
| Substance | Celsius | Fahrenheit | Kelvin | Note |
| Absolute zero | -273.1°C | -460°F | 0°K | (coldest possible temperature) |
| Deep space | -270.5°C | -455°F | 2.7°K | |
| Dark side of moon | -153°C | -243°F | 120°K | |
| Mars surface average | -55° C | -67° F | 218°K | |
| Water melts | 0°C | 32°F | ||
| Earth surface average | 16°C | 61°F | 289°K | |
| Human body temperature | 37°C | 98.6°F | ||
| Water boils | 100°C | 212°F | ||
| Cotton auto-ignition | 120°C | 250°F | ||
| Paper auto-ignition | 249°C | 480°F | (not really 451°F, sorry Ray) | |
| Solder melts | 250°C | 481°F | ||
| Soldering iron temperature | 427°C | 800°F | ||
| Hot side of Mercury | 427°C | 800°F | ||
| Aluminum melts | 660°C | 1,221°F | ||
| Steel melts | 1,370°C | 2,500°F | ||
| Candle flame | 1,400°C | 2,600°F | ||
| Iron melts | 1,510°C | 2,750°F | ||
| Stainless steel melts | 1,535°C | 2,795°F | ||
| Blowtorch | 1,600°C | 2,900°F | ||
| Propane torch | 1,995°C | 3,620°F | ||
| Oxyacetylene torch | 3,000°C | 5,400°F | ||
| Tungsten melts | 3422 °C | 6,192°F | (hottest metal melting point) | |
| Sun (photosphere) | 5,505°C | 9,941°F | 5778°K | |
| Sun (core) | 15 million°C | 27 million°F | 15 million°K | |
| Supernova core | 100 billion°K | (after collapse) |
