After a supernova explosion, a neutron star may be left behind.

Our prokaryotic forebears evolved on a planet-sized lump of fallout from a star-sized nuclear explosion, a supernova that synthesised the elements that go to make our planet and ourselves.

Manganese is part of the iron group of elements, which are thought to be synthesized in large stars shortly before the supernova explosion.

The materials thrown off from the supernova explosion are ionized by the energy and the compact object that it can produce.

A fraction of the mass of a star that collapses to form a neutron star is released in the supernova explosion from which it forms ( from the law of mass-energy equivalence, ).

These radionuclides — possibly produced by the explosion of a supernova — are extinct today, but their decay products can be detected in very old material, such as that which constitutes meteorites.

A supernova ( abbreviated SN, plural SNe after supernovae ) is a stellar explosion that is more energetic than a nova.

The core of an aging massive star may undergo sudden gravitational collapse, releasing gravitational potential energy that can create a supernova explosion.

This is the nebula of a supernova explosion which is believed to have been visible from the Earth around 10, 000 years ago.

A supernova remnant ( SNR ) is the structure resulting from the explosion of a star in a supernova.

The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way.

There are two possible routes to a supernova: either a massive star may run out of fuel, ceasing to generate fusion energy in its core, and collapsing inward under the force of its own gravity to form a neutron star or a black hole ; or a white dwarf star may accumulate ( accrete ) material from a companion star until it reaches a critical mass and undergoes a thermonuclear explosion.

In either case, the resulting supernova explosion expels much or all of the stellar material with velocities as much as 10 % the speed of light, that is, about 30, 000 km / s.

Other well-known supernova remnants include the Crab Nebula, Tycho, the remnant of SN 1572, named after Tycho Brahe who recorded the brightness of its original explosion, and Kepler, the remnant of SN 1604, named after Johannes Kepler.

Stars more massive than 8 solar masses ( M < sub >⊙</ sub >) will likely end their lives in a dramatic supernova explosion.

Molecular clouds may collide with each other, or a nearby supernova explosion can be a trigger, sending shocked matter into the cloud at very high speeds.

All uranium found on earth is thought to have been synthesized during a supernova explosion that occurred roughly 5 billion years ago.

Supernova nucleosynthesis is also thought to be responsible for the creation of elements heavier than iron and nickel ( Z > 26-28 ), in the last few seconds of the explosion of a supernova, such as a type II supernova event.

These elements must absorb energy as they are created, and do so from energy available in the supernova explosion.

There is also evidence for injection of short-lived ( now extinct ) isotopes from a nearby supernova explosion that may have triggered solar nebula collapse.

The nebula was the first astronomical object identified with a historical supernova explosion.

Thanks to the recorded observations of Far Eastern and Middle Eastern astronomers of 1054, Crab Nebula became the first astronomical object recognized as being connected to a supernova explosion.

By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions.

The abundance of elements in the Solar System is in keeping with their origin from nucleosynthesis in the Big Bang and a number of progenitor supernova stars.

In supernova explosions, calcium is formed from the reaction of carbon with various numbers of alpha particles ( helium nuclei ), until the most common calcium isotope ( containing 10 helium nuclei ) has been synthesized.

* 1054 – A supernova is seen by Chinese, Arab, and possibly Amerindian observers near the star Zeta Tauri.

The historic supernova SN 1006 is described by various sources as appearing on April 30 to May 1, 1006, in the constellation of Lupus.

The relative abundance of magnesium is related to the fact that it is easily built up in supernova stars from a sequential addition of three helium nuclei to carbon ( which in turn is made from three helium nuclei ).

On Earth, such native nickel is always found in combination with iron, a reflection of those elements ' origin as major end products of supernova nucleosynthesis.

Nickel-78's half-life was recently measured to be 110 milliseconds and is believed to be an important isotope involved in supernova nucleosynthesis of elements heavier than iron.

The r process is thought to occur in supernova explosions because the conditions of high temperature, high neutron flux and ejected matter are present.

The supernova event was recorded in the year 1054 and is labelled SN 1054.

Although much of the optical and X-ray emission from supernova remnants originates from ionized gas, a great amount of the radio emission is a form of non-thermal emission called synchrotron emission.

A neutron star is a type of stellar remnant that can result from the gravitational collapse of a massive star during a Type II, Type Ib or Type Ic supernova event.

As the core of a massive star is compressed during a supernova, and collapses into a neutron star, it retains most of its angular momentum.

It is thought to be at the brink of becoming a type-1a supernova.

Astronomers speculate that this phenomenon is caused by the shock wave from a supernova.

An even more speculative hypothesis is that intense radiation from a nearby supernova was responsible for the extinctions.

In Cryptic Studios online role-playing game, Star Trek: Online, Janeway is briefly mentioned in the background, exploring the Hobus system after the supernova that was the catalyst for the events of the 2009 Star Trek movie.

During the events of the comic book mini-series Star Trek: Countdown ( which serves as the canonical prequel to the 2009 Star Trek film ), Geordi ( now a commander ) is reunited with Data and Picard during an effort to stop a massive supernova that threatens all of existence.

According to the 2009 film Star Trek and the prequel comic series Star Trek: Countdown, Romulus ( and presumably Remus ) is destroyed in 2387 by a star going supernova.

The problems of the Hobus supernova being so devastating to other solar systems is addressed in the computer game Star Trek Online, by declaring the blast to have " traveled through subspace ".