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Planck star

Planck star noun: a hypothetical astronomical object whose energy is around the Planck density (5.155 × 10⁹⁶ kg/m³).

Noun

Planck star (plural Planck stars)

  1. A hypothetical astronomical object whose energy is around the Planck density (5.155 × 10⁹⁶ kg/m³).
    • The entire matter of the sun condensed into the space of an atom: a Planck star should be constituted by this extreme state of matter.2015, Carlo Rovelli, translated by Simon Carnell and Erica Segre, Seven Brief Lessons on Physics, Penguin, published 2016, page 44

Forms of Planck star

pluralPlanck stars

Questions about Planck star

What does Planck star mean?
Planck star means a hypothetical astronomical object whose energy is around the Planck density (5.155 × 10⁹⁶ kg/m³).
What part of speech is Planck star?
Planck star is a noun.
What is the plural of Planck star?
The plural of Planck star is Planck stars.

Words near Planck star in the dictionary

  1. Planck pressures
  2. Planck relic
  3. Planck relics
  4. Planck scale
  5. Planck speed
  6. Planck star
  7. Planck stars
  8. Planck temperature
  9. Planck temperatures
  10. Planck time
  11. Planck times

Source and license

Adapted from Wiktionary: Planck star (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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