Sky science
Supernova
Direct answer
Supernova: A Supernova is a powerful stellar explosion produced by core collapse or thermonuclear disruption under distinct physical pathways.
It is an explosive endpoint or transformation of a star.
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At a glance
- Found in
- Astronomy & Skywatching
- Related
- Pulsar, Stellar Black Hole, Planetary Nebula, Emission Nebula
It is an explosive endpoint or transformation of a star.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.
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The story behind Supernova
Historical guest stars were later connected with expanding remnants and modern supernova physics.
A one-minute story
The Wandering Stars
How the moving planets were watched, named and found, and what a transit is.
Why Supernova matters
Supernovae create and disperse elements, form remnants, and serve as distance indicators.
How to read Supernova
Identify type from spectra and light curves rather than brightness alone.
Supernova in practice: an example
A Type Ia supernova lacks hydrogen and arises from a white-dwarf system, unlike core-collapse types.
Where readings of Supernova go wrong
Not every nova is a supernova, and no nearby event should be predicted from ordinary stellar variability.
Sources and editorial method
Research references used for this entry include:
- NASA Science: Stars - NASA overview of stellar birth, main-sequence evolution, giant phases, remnants, and supernovae.
- NASA Science: Universe Glossary - NASA definitions for common stellar, galactic, orbital, and high-energy astronomy terms.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Last updated
- 2026-09-26
Distinguish the paths to supernova
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Common questions
What is a Supernova?
A Supernova is a powerful stellar explosion produced by core collapse or thermonuclear disruption under distinct physical pathways.
What do people get wrong about a Supernova?
Not every nova is a supernova, and no nearby event should be predicted from ordinary stellar variability.
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