A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event 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. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months. Supernovae are more energetic than novae. In Latin, nova means "new", referring astronomically to what appears to be a temporary new bright star. Adding 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 1929.

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Weird Supernova Remnant Blows Scientists' Minds

12th century astronomers witnessed a supernovae with the naked eye. Recently, modern observations showed that the historic event was a rare Type Iax supernova which resulted from the collision of two white dwarfs.

Previously unseen remains of supernova explosions revealed — Most detailed radio image yet of the Milky Way’s galactic plane shows the gas between the stars

More than 20 new supernova remnants discovered in the most detailed radio image yet of the Milky Way's galactic plane.

Radio Astronomers Discover New Supernova Remnants in Milky Way Galaxy

A team of astronomers has discovered a stellar explosion rich in oxygen and magnesium. A similar supernova with carbon-oxygen circumstellar matter was first discovered only in 2021. These new types of supernovae can provide new insights into the later stages of life of massive stars.

Astronomy & Astrophysics 101: Supernova

Newfound kind of supernova can tear apart a planet's atmosphere

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Supernova algorithm classifies 1,000 dying stars without error

Hubble Spots Colorful Supernova Remnant in Large Magellanic Cloud

Celestial Fireworks Display: Hubble Captures Shreds of Luridly Colored Supernova Remnant

Study investigates a rare Type Icn supernova

Supernova anniversary: Famous Tycho's star flared up 450 years ago this month

Hubble captures three faces of evolving supernova in early universe

Secrets of an Earlier Universe: Hubble Captures Red Supergiant Supernova From 11 Billion Years Ago

A supernova in distant space allows us to understand the origin of the elements in the universe

Hubble captured a supernova as it exploded

Red-supergiant supernova images reveal secrets of an earlier universe

Hubble Observes Early Phases of Supernova in Early Universe