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The Crab Nebula is a pulsar wind nebula associated with the 1054 supernova.It is located about 6,500 light-years from the Earth. [1]A near-Earth supernova is an explosion resulting from the death of a star that occurs close enough to the Earth (roughly less than 10 to 300 parsecs (pc) [30 to 1000 light-years] away [2]) to have noticeable effects on Earth's biosphere.
The estimated time until a gamma-ray burst, or massive, hyperenergetic supernova, occurs within 6,500 light-years of Earth; close enough for its rays to affect Earth's ozone layer and potentially trigger a mass extinction, assuming the hypothesis is correct that a previous such explosion triggered the Ordovician–Silurian extinction event ...
A near-Earth supernova is a supernova close enough to the Earth to have noticeable effects on its biosphere. Depending upon the type and energy of the supernova, it could be as far as 3,000 light-years away. In 1996 it was theorised that traces of past supernovae might be detectable on Earth in the form of metal isotope signatures in rock strata.
G299.2-2.9 is a supernova remnant in the Milky Way, 16,000 light years from Earth. [2] It is the remains of a Type Ia supernova . [ 3 ] The observed radius of the remnant shell translates to approximately 4,500 years of expansion, [ 4 ] making it one of the oldest observed Type Ia supernova remnants.
The cause of the Devonian period extinction 359 million years ago, ranked as one of the five great extinctions of life on Earth, remains a mystery. Now, a new study reveals the explosion of a ...
185 – Chinese astronomers become the first to record observations of a supernova, SN 185. 1006 – SN 1006, a magnitude −7.5 supernova in the constellation of Lupus, is observed throughout Asia, the Middle East, and Europe. 1054 – Astronomers in Asia and the Middle East observe SN 1054, the Crab Nebula supernova explosion.
Did an exploding star once change life on Earth?
Light curve of NGC 2525 after a supernova. Time-domain astronomy is the study of how astronomical objects change with time. Said to have begun with Galileo's Letters on Sunspots, the field has now naturally expanded to encompass variable objects beyond the Solar System. Temporal variation may originate from movement of the source, or changes in ...