Definitions for Supernova
ˌsu pərˈnoʊ və; -visu·per·no·va

Princeton's WordNetRate this definition:2.0 / 1 vote

1. supernovanoun

   a star that explodes and becomes extremely luminous in the process

WiktionaryRate this definition:3.0 / 1 vote

1. supernovanoun

   A star which explodes, increasing its brightness to typically a billion times that of our sun, though attenuated by the great distance from our sun. Some leave only debris (Type I); others fade to invisibility as neutron stars (Type II).

2. Etymology: super- + nova

WikipediaRate this definition:0.0 / 0 votes

1. Supernova

   A supernova is a powerful,violent and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the progenitor, either collapses to a neutron star or black hole, or is completely destroyed to form a diffuse nebula. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months. The last supernova to be directly observed in the Milky Way was Kepler's Supernova in 1604, appearing not long after the also naked-eye visible SN 1572, but the remnants of more recent supernovae have been found. Observations of supernovae in other galaxies suggest they occur in the Milky Way on average about three times every century. These supernovae would almost certainly be observable with modern astronomical telescopes. The most recent naked-eye supernova was SN 1987A, which was the explosion of a blue supergiant star in the Large Magellanic Cloud, a satellite of the Milky Way. Theoretical studies indicate that most supernovae are triggered by one of two basic mechanisms: the sudden re-ignition of nuclear fusion in a degenerate star such as a white dwarf, or the sudden gravitational collapse of a massive star's core. In the first class of events, the object's temperature is raised enough to trigger runaway nuclear fusion, completely disrupting the star. Possible causes are an accumulation of material from a binary companion through accretion, or a stellar merger. In the massive star case, the core of a massive star may undergo sudden collapse once it is unable to produce sufficient energy from fusion to counteract the star's own gravity. While some observed supernovae are more complex than these two simplified theories, the astrophysical mechanics are established and accepted by the astronomical community. Supernovae can expel several solar masses of material at velocities up to several percent of the speed of light. This drives an expanding shock wave into the surrounding interstellar medium, sweeping up an expanding shell of gas and dust observed as a supernova remnant. Supernovae are a major source of elements in the interstellar medium from oxygen to rubidium. The expanding shock waves of supernovae can trigger the formation of new stars. Supernova are a major source of cosmic rays. Supernovae might produce gravitational waves, though thus far, gravitational waves have been detected only from the mergers of black holes and neutron stars.

ChatGPTRate this definition:0.0 / 0 votes

1. supernova

   A supernova is a powerful and luminous stellar explosion that occurs at the end of a star's life cycle. This happens when a star exhausts its nuclear fuel and collapses under its own gravitational force, releasing a vast amount of energy and causing the star to shine with an intense brightness for a short period of time before gradually fading away. The materials expelled during a supernova can form the building blocks of new stars and planets.

WikidataRate this definition:0.0 / 0 votes

1. Supernova

   A supernova is a stellar explosion that is more energetic than a nova. It is pronounced with the plural supernovae or supernovas. Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months. During this short interval a supernova can radiate as much energy as the Sun is expected to emit over its entire life span. The explosion expels much or all of a star's material at a velocity of up to 30,000 km/s, driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant. Nova means "new" in Latin, referring to what appears to be a very bright new star shining in the celestial sphere; the prefix "super-" distinguishes supernovae from ordinary novae which are far less luminous. The word supernova was coined by Walter Baade and Fritz Zwicky in 1931. Supernovae can be triggered in one of two ways: by the sudden reignition of nuclear fusion in a degenerate star; or by the collapse of the core of a massive star. A degenerate white dwarf may accumulate sufficient material from a companion, either through accretion or via a merger, to raise its core temperature, ignite carbon fusion, and trigger runaway nuclear fusion, completely disrupting the star. The core of a massive star may undergo sudden gravitational collapse, releasing gravitational potential energy that can create a supernova explosion.

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1. supernova

   Song lyrics by supernova -- Explore a large variety of song lyrics performed by supernova on the Lyrics.com website.

Matched Categories

1. • Star

How to pronounce Supernova?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Supernova in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Supernova in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of Supernova in Pythagorean Numerology is: 5

Examples of Supernova in a Sentence

1. Daniel Wang:

   There are a lot of supernova remnants, black holes, and neutron stars there. Each X-ray dot or feature represents an energetic source, most of which are in the center.

2. Ryan Foley:

   We used to talk about supernova work like we were crime scene investigators, where we would show up after the fact and try to figure out what happened to that star, this is a different situation, because we really know what's going on and we actually see the death in real time.

3. Andrew Howell:

   The term Rosetta Stone is used too often as an analogy when we find a new astrophysical object, but in this case I think it is fitting, this supernova is literally helping us decode thousand-year-old records from cultures all over the world.

4. Peter Garnavich:

   In order to see something that happens on timescales of minutes, like a shock breakout, you want to have a camera continuously monitoring the sky, you don’t know when a supernova is going to go off, and Kepler's vigilance allowed us to be a witness as the explosion began.

5. Charles Kilpatrick:

   What massive stars do right before they explode is a big unsolved mystery, it's rare to see this kind of star right before it explodes into a supernova.

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Supernova
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Supernova
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Supernova
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Supernova