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A typical large galaxy like the Milky Way contains hundreds of billions of stars. There are more than 2 trillion (10 12) galaxies, though most are less than 10% the mass of the Milky Way. [107] Overall, there are likely to be between 10 22 and 10 24 stars [108] [109] (more stars than all the grains of sand on planet Earth).
Barnard's Star is a small red dwarf star in the constellation of Ophiuchus.At a distance of 5.96 light-years (1.83 pc) from Earth, it is the fourth-nearest-known individual star to the Sun after the three components of the Alpha Centauri system, and is the closest star in the northern celestial hemisphere. [15]
This binary star system consists of a red giant (Mira, designated Mira A) undergoing mass loss and a high-temperature white dwarf companion (Mira B) that is accreting mass from the primary. Such an arrangement of stars is known as a symbiotic system and this is the closest such symbiotic pair to the Sun .
Image credits: astarisaslave #8. TIL in South Korea, only blind people can get a masseur's license. This law was established in 1912, to help visually impaired people earn a living.
Many restaurant owners think of getting a Michelin star as a major achievement. But, apparently, it can be more of a curse, as 40% of Michelin-awarded restaurants closed by the end of 2019.
The two stars were known to the Bedouin as "qarna al-hamal", "horns of the ram". [30] It is 59 light-years from Earth. [31] It has a luminosity of 11 L ☉ and its absolute magnitude is 2.1. [29] It is a spectroscopic binary star, one in which the companion star is only known through analysis of the spectra. [32] The spectral class of the ...
Alphard / ˈ æ l f ɑːr d /, [10] designated Alpha Hydrae (α Hydrae, abbreviated Alpha Hya, α Hya), is the brightest star in the constellation of Hydra. It is a single giant star, cooler than the Sun but larger and more luminous. It is about 177 light-years away.
Goniasteridae are usually middle-sized sea stars with a characteristic double range of marginal plates bordering the disk and arms. Most of them have five arms, often short and triangular, around a broad central disc; many species are pentagonal or subpentagonal, covered densely with granular, seed-like protuberances, hence the name of the ...