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It was believed that the cutoff for round objects is somewhere between 100 km and 200 km in radius if they have a large amount of ice in their makeup; [1] however, later studies revealed that icy satellites as large as Iapetus (1,470 kilometers in diameter) are not in hydrostatic equilibrium at this time, [2] and a 2019 assessment suggests that ...
This formula is a simplified version of that in section 2.2 of Stansberry et al., 2007, [39] where emissivity and beaming parameter were assumed to equal unity, and was replaced with 4, accounting for the difference between circle and sphere. All parameters mentioned above were taken from the same paper.
Average surface gravity; Lowest Highest Lowest Highest Lowest Highest Star: 1.4 g/cm 3. Sun [7] [8] 5778 K. Sun [9] [10] 274 m/s 2. Sun [11] Major planet: 0.7 g/cm 3 Saturn [12] [13] 5.51 g/cm 3 Earth [14] [15] 73 K Neptune [16] [17] [18] 733 K Venus [19] 3.70 m/s 2 Mercury [18] 23.1 m/s 2 Jupiter [18] Dwarf planet: 1.4 ±0.2 g/cm 3 Orcus [20 ...
A star is a massive luminous spheroid astronomical object made of plasma that is held together by its own gravity.Stars exhibit great diversity in their properties (such as mass, volume, velocity, stage in stellar evolution, and distance from Earth) and some of the outliers are so disproportionate in comparison with the general population that they are considered extreme.
Discovered through gamma-ray burst mapping. Largest-known regular formation in the observable universe. [8] Huge-LQG (2012–2013) 4,000,000,000 [9] [10] [11] Decoupling of 73 quasars. Largest-known large quasar group and the first structure found to exceed 3 billion light-years. "The Giant Arc" (2021) 3,300,000,000 [12] Located 9.2 billion ...
"A Man Without Honor" is the seventh episode of the second season of HBO's medieval fantasy television series Game of Thrones. The 17th episode overall, "A Man Without Honor" was written by series co-creators David Benioff and D. B. Weiss, and directed by David Nutter. [2] It first aired on HBO on May 13, 2012.
HBO ordered a second season of Game of Thrones on April 19, 2011, two days after the series premiere. [13] The second season obtained a 15% increase in budget in order to be able to stage the war's most important battle, [ 14 ] the Battle of the Blackwater, in episode nine.
Gravity on the Earth's surface varies by around 0.7%, from 9.7639 m/s 2 on the Nevado Huascarán mountain in Peru to 9.8337 m/s 2 at the surface of the Arctic Ocean. [6] In large cities, it ranges from 9.7806 m/s 2 [ 7 ] in Kuala Lumpur , Mexico City , and Singapore to 9.825 m/s 2 in Oslo and Helsinki .