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This is a list of supernova candidates, or stars that are believed to soon become supernovae. Type II supernova progenitors include stars with at least 8~10 solar masses that are in the final stages of their evolution.
The supernova was about 21 million light-years from Earth and is expected to have left behind either a neutron star or black hole, based on current stellar evolution models. The supernova is located near a prominent HII region, NGC 5461, in an outer spiral arm of the bright galaxy. [3] By 22 May 2023, SN 2023ixf had brightened to about ...
SN 2023rve is a type II supernova that happened in the 10th magnitude barred spiral galaxy NGC 1097 on September 8, 2023. [1] Scientists from the McDonald Observatory in the state of Texas, United States, have observed the supernova and conducted photometric measurements, they described it to be the brightest supernova in the sky as of September 12, 2023.
Boom.In the colossal Pinwheel galaxy, 25 million light-years away, a star has just exploded and is even visible through small telescopes. The supernova-hunting astronomer Koichi Itagaki discovered ...
There will be a rare full moon on a leap day; this event happens roughly once every century. [23] The next full moon on a leap day will not occur until February 29, 2124. [24] 2052 December 6 The closest supermoon of the century will occur. [25] 2053 August 29 A Total Penumbral Lunar Eclipse will occur, the first since 2006. [26] 2057
A near-Earth supernova is an explosion resulting from the death of a star that occurs close enough to the Earth (less than roughly 10 to 300 parsecs [33 to 978 light-years] away [2]) to have noticeable effects on Earth's biosphere. An estimated 20 supernova explosions have happened within 300 pc of the Earth over the last 11 million years.
However, the supernova would have to be precisely oriented relative to Earth to have any negative effect. [211] 600–800 million Various The level of carbon dioxide in the atmosphere will drop dramatically, making photosynthesis in plants impossible. The lack of oxygen-producing plants will cause free oxygen in the atmosphere to disappear ...
SN 1054 remnant (Crab Nebula)A supernova is an event in which a star destroys itself in an explosion which can briefly become as luminous as an entire galaxy.This list of supernovae of historical significance includes events that were observed prior to the development of photography, and individual events that have been the subject of a scientific paper that contributed to supernova theory.