| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Kepler-42 - Planetary system |  |  |  |  |
| 3 | Temperature comparisons | Kepler-42c | Kepler-42b | Kepler-42d | Earth |
| 4 | Global equilibrium temperature | 728 K 455 °C 851 °F | 524 K 251 °C 483.8 °F | 454 K 181 °C 357.8 °F | 255 K −18 °C −0.4 °F |
| 5 | References: | References: | References: | References: | References: |

Question: What is the Equilibrium temperature of Earth?
Answer: The Equilibrium temperature of Earth is 255 K (−18 °C).