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A tier list is a concept originating in video game culture where playable characters or other in-game elements are subjectively ranked by their respective viability as part of a list. Characters listed high on a tier list of a specific game are considered to be powerful characters compared to lower-scoring characters, and are therefore more ...
Tower of Hell is a multiplayer platform game where the player must get past a variety of obstacles to get to the top of the tower. [105] Unlike traditional Roblox obstacle courses, there are no checkpoints. [106] Tower of Hell has been played around 19.2 billion times as of October 2022. The game was nominated "Best Mobile Game" in the 7th ...
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
25.4 ± 0.2 [98] AD This is the nearest red giant to the Earth, and the fourth brightest star in the night sky. Pollux (β Geminorum) 9.06 ± 0.03 [93] AD The nearest giant star to the Earth. Spica (α Virginis A) 7.47 ± 0.54 [99] One of the nearest supernova candidates and the sixteenth-brightest star in the night sky. Regulus (α Leonis A) 4 ...
The other two cover the equatorial region of the celestial sphere, from the declination of 30° south to 30° north. The two equatorial charts are mercator projections, one for the eastern hemisphere of the celestial sphere and one for the western hemisphere. Note that unlike familiar maps, east is shown to the left and west is shown to the right.
4 Very close to the theoretical maximum. 5 "Crowning" this series. This is predicted to be the longest eclipse during the current 10,000-year period, from 4000 BC to 6000 AD (eclipse predictions by Fred Espenak, NASA/GSFC.DEPP). [141] 6 "Crowning" this series. 7 This will be the longest solar eclipse of the 25th century. 8 "Crowning" at the top ...
In ancient times, only the Sun and Moon, a few stars, and the most easily visible planets had names. Over the last few hundred years, the number of identified astronomical objects has risen from hundreds to over a billion, and more are discovered every year.
The original list of Bayer designations contained 1,564 naked-eye stars, and several stars not catalogued by Bayer have been added by subsequent astronomers. The Flamsteed designation also lists stars by constellation, but by number rather than letter, ordering them by increasing right ascension rather than by decreasing brightness.