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Despite their high luminosity, many of them are nevertheless too distant to be observed with the naked eye. Stars that are at least sometimes visible to the unaided eye have their apparent magnitude (6.5 or brighter) highlighted in blue. The first list gives stars that are estimated to be 60 M ☉ or larger; the majority of which are shown.
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.
It has been previously considered to be a possible Thorne–Żytkow object. [126] HV 11417: 673 [112] –798 [110] Small Magellanic Cloud L/T eff: Candidate Thorne-Zytkow object. [126] HD 269953 647 [118] –720 [125] Large Magellanic Cloud L/T eff: A yellow hypergiant. HD 271182: 621 [127] Large Magellanic Cloud L/T eff: A yellow hypergiant ...
The gravity g′ at depth d is given by g′ = g(1 − d/R) where g is acceleration due to gravity on the surface of the Earth, d is depth and R is the radius of the Earth. If the density decreased linearly with increasing radius from a density ρ 0 at the center to ρ 1 at the surface, then ρ ( r ) = ρ 0 − ( ρ 0 − ρ 1 ) r / R , and the ...
Highest Lowest Highest Lowest Highest Lowest Sun: N/A 5,000,000 K In a solar flare [33] 1240 K In a sunspot [34] Mercury: 3 kilometres (1.9 mi) Caloris Montes, northwest Caloris Basin rim mountains [35] [36] 723 K Dayside of Mercury [37] 89 K Permanently shaded polar craters [38] Venus: 11 kilometres (6.8 mi) Maxwell Montes, Ishtar Terra [39 ...
[54] [55] Iapetus is generally still considered a planetary-mass moon nonetheless, [56] though not always. [57] The table below gives Orcus, Quaoar, Gonggong, and Sedna as additional consensus dwarf planets; slightly smaller Salacia, which is larger than 400 km radius, has been included as a borderline case for comparison, (and is therefore ...
Given the age of the universe and the composition of available matter, there is simply not enough time to grow black holes larger than this mass. The limit is only 5 × 10 10 M ☉ for black holes with typical properties, but can reach 2.7 × 10 11 M ☉ at maximal prograde spin (a = 1). [a] SDSS J123132.37+013814.1: 1.12 +0.28 −0.23 × 10 11 ...
In physics, gravity (from Latin gravitas ' weight ' [1]) is a fundamental interaction primarily observed as a mutual attraction between all things that have mass.Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force, and 10 29 times weaker than the weak interaction.