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The highest point on Venus, Maxwell Montes, is therefore the coolest point on Venus, with a temperature of about 655 K (380 °C; 715 °F) and an atmospheric pressure of about 4.5 MPa (45 bar). [ 131 ] [ 132 ] In 1995, the Magellan spacecraft imaged a highly reflective substance at the tops of the highest mountain peaks, a " Venus snow " that ...
The early Earth during the Hadean eon is believed by most scientists to have had a Venus-like atmosphere, with roughly 100 bar of CO 2 and a surface temperature of 230 °C, and possibly even sulfuric acid clouds, until about 4.0 billion years ago, by which time plate tectonics were in full force and together with the early water oceans, removed ...
Temperature (K) Mass Notes HIP 78530 b: 2,700 ± 100 [29] 23 M J [29] Likely a brown dwarf. GQ Lupi b: 2,650 ± 100 [30] 20 M J [30] [30] Likely a brown dwarf. CT Chamaelontis b: 2,600 ± 250 [31] 17 M J [31] Likely a brown dwarf. DH Tauri b 2,400 ± 100 [32] 11 M J [32] The following well-known planets are listed for the purpose of comparison ...
Venus is similar in size and distance from the sun when compared with Earth, and some researchers believe the planet might have even had an Earth-like climate at some point.
For example, on Saturn, the effective temperature is approximately 95 K, compared to an equilibrium temperature of about 63 K. [25] [26] This corresponds to a ratio between power emitted and solar power received of ~2.4, indicating a significant internal energy source. [26]
The lower average density and temperature of these objects give them lower index values. Only Titan (a moon of Saturn) is known to hold on to a significant atmosphere despite an overall lower size and density. While Io (a moon of Jupiter) has a low average temperature, surface temperature on the moon varies wildly due to geologic activity. [10]
Highest dew point temperature: A dew point of 35 °C (95 °F) — while the temperature was 42 °C (108 °F) — was observed at Dhahran, Saudi Arabia, at 3:00 p.m. on 8 July 2003. [ 201 ] Highest heat index : In the observation above at Dhahran, Saudi Arabia, the heat index ("feels like" temperature) was 81.1 °C (178.0 °F).
Recent years show the atmosphere can deliver the coldest air sooner or later than the average: A bitterly cold outbreak in early March 2019 was the coldest of the season in Great Falls, Montana ...