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NGC 7538, near the more famous Bubble Nebula, is located in the constellation Cepheus.It is located about 9,100 light-years from Earth. It is home to the biggest yet discovered protostar which is about 300 times the size of the Solar System. [4]
This article lists the largest power stations in the world, the ten overall and the five of each type, in terms of installed electrical capacity. Non-renewable power stations are those that run on coal , fuel oils , nuclear fuel , natural gas , oil shale and peat , while renewable power stations run on fuel sources such as biomass , geothermal ...
A protostar is a very young star that is still gathering mass from its parent molecular cloud. It is the earliest phase in the process of stellar evolution . [ 1 ] For a low-mass star (i.e. that of the Sun or lower), it lasts about 500,000 years. [ 2 ]
The Eddington limit is the point beyond which a star ought to push itself apart, or at least shed enough mass to reduce its internal energy generation to a lower, maintainable rate. The actual limit-point mass depends on how opaque the gas in the star is, and metal-rich Population I stars have lower mass limits than metal-poor Population II stars.
The complete chain releases a net energy of 26.732 MeV [11] but 2.2 percent of this energy (0.59 MeV) is lost to the neutrinos that are produced. [12] The p–p I branch is dominant at temperatures of 10 to 18 MK. [13] Below 10 MK, the p–p chain proceeds at slow rate, resulting in a low production of 4 He. [14]
India is the world’s third-largest energy consuming country, although its energy use and emissions per person are less than half the world average, data from the Paris-based International Energy ...
Widely recognised as being among the largest known stars, [21] radius decreased to ~500 R ☉ during the 2020 great dimming event. [75] R Horologii: 630 [60] L/T eff: A red giant star with one of the largest ranges in brightness known of stars in the night sky visible to the unaided eye. Despite its large radius, it is less massive than the Sun.
Electricity generation by source and country in 2023 [1] Annual world electricity net generation [2] This is a list of countries and dependencies by annual electricity production. China is the world's largest electricity producing country, followed by the United States and India.