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  2. Neptune - Wikipedia

    en.wikipedia.org/wiki/Neptune

    Neptune's mass of 1.0243 × 10 26 kg [8] is intermediate between Earth and the larger gas giants: it is 17 times that of Earth but just 1/19th that of Jupiter. [g] Its gravity at 1 bar is 11.15 m/s 2, 1.14 times the surface gravity of Earth, [71] and surpassed only by Jupiter. [72] Neptune's equatorial radius of 24,764 km [11] is nearly four ...

  3. Conversion of scales of temperature - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_scales_of...

    Average surface temperature on Earth 288 15 59 519 128 5 12 15 Average human body temperature* 310 37 98 558 95 12 29 27 Highest recorded surface temperature on Earth [2] 331 58 [2] 136.4 [2] 596 63 19 46 38 Water boils (at standard pressure) 373.1339 99.9839 211.97102 671.64102 0.00 33.00 80.00 60.00 Titanium melts 1941 1668 3034 3494 −2352 ...

  4. Climate of Triton - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Triton

    The mean surface pressure varies significantly with respect to Triton's seasons; by 1997, Triton's atmospheric surface pressure had risen to approximately 1.9 +0.18 −0.15 Pa [ 2 ] and the surface pressure may have reached a maximum of roughly 4 Pa by 2010 (though there were no direct measurements via occultation between 2007 and 2017).

  5. Geology of Triton - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Triton

    The geology of Triton encompasses the physical characteristics of the surface, internal structure, and geological history of Neptune's largest moon Triton. With a mean density of 2.061 g/cm 3 , [ 1 ] Triton is roughly 15-35% water ice by mass; Triton is a differentiated body, with an icy solid crust atop a probable subsurface ocean and a rocky ...

  6. Orders of magnitude (temperature) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    134 K, highest-temperature superconductor at ambient pressure, mercury barium calcium copper oxide; 165 K, glass point of supercooled water; 184.0 K (–89.2 °C), coldest air recorded on Earth; 192 K, Debye temperature of ice; 273.15 K (0 °C), melting point of bound water; 273.16 K (0.01 °C), temperature of triple point of water; c. 293 K ...

  7. Ice giant - Wikipedia

    en.wikipedia.org/wiki/Ice_giant

    In the 1990s, it was determined that Uranus and Neptune were a distinct class of giant planet, separate from the other giant planets, Jupiter and Saturn, which are gas giants predominantly composed of hydrogen and helium. [1] Neptune and Uranus are now referred to as ice giants. Lacking well-defined solid surfaces, they are primarily composed ...

  8. Planetary equilibrium temperature - Wikipedia

    en.wikipedia.org/wiki/Planetary_equilibrium...

    [13] [14] Similarly, Earth has an effective temperature of 255 K (−18 °C; −1 °F), [14] but a surface temperature of about 288 K (15 °C; 59 °F) [15] due to the greenhouse effect in our lower atmosphere. [5] [4] The surface temperatures of such planets are more accurately estimated by modeling thermal radiation transport through the ...

  9. Moons of Neptune - Wikipedia

    en.wikipedia.org/wiki/Moons_of_Neptune

    Triton is one of the coldest bodies in the Solar System, with a surface temperature of about 38 K (−235.2 °C). [26] Its surface is covered by nitrogen, methane, carbon dioxide and water ices [27] and has a high geometric albedo of more than 70%. [6] The Bond albedo is even higher, reaching up to 90%.