1. a place for the burial of a corpse, esp beneath the ground and usually marked by a tombstone. 2. something resembling a grave or resting place: the ship went to its grave. 3. the grave a poetic term for death. 4. have one foot in the grave informal to be near death.
Without this greenhouse effect, the average surface temperature would be 255 degrees kelvin (-18 degrees Celsius or 0 degrees Fahrenheit); a temperature so low that all water on Earth would freeze, the oceans would turn into ice and life, as we know it, would not exist.
As a result, Venus has an average surface temperature of 460 C. Although Earth has an average surface temperature of 7.2 degrees, its surface temperature varies widely, ranging from -89.2 to 70.7 C. Mars also shows great variety in its temperature, ranging from -140 to 20 C. Because it has no solid surface, Jupiter technically has no surface temperature.