events
Radiation from an explosion on the magnetar SGR 1806-20 reaches Earth. It is the brightest extrasolar event known to have been witnessed on the planet.
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Radiation
Waves or particles moving through space
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. This includes:electromagnetic radiation consisting of photons, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and…Source: Wikipedia (CC BY-SA)
Magnetar
Type of neutron star with a strong magnetic field
A magnetar is a type of neutron star with an extremely powerful magnetic field (~109 to 1011 T, ~1013 to 1015 G). The magnetic-field decay powers the emission of high-energy electromagnetic radiation, particularly X-rays and gamma rays.Source: Wikipedia (CC BY-SA)
SGR 1806−20
Magnetar in the constellation Sagittarius
SGR 1806−20 is a magnetar, a type of neutron star with a very powerful magnetic field, that was discovered in 1979 and identified as a soft gamma repeater. SGR 1806−20 is located about 13 kiloparsecs (42,000 light-years) from Earth on the far side of the Milky Way in the…Source: Wikipedia (CC BY-SA)
Extrasolar object
Any astronomical object that exists outside the Solar System
An extrasolar object is an astronomical object that exists outside the Solar System. It is not applied to stars, or any other celestial object that is larger than a star or the Solar System, such as a galaxy. The terms for extrasolar examples of Solar System bodies…Source: Wikipedia (CC BY-SA)