event horizon
noun
: the surface of a black hole : the boundary of a black hole beyond which nothing can escape from within it
Examples of event horizon in a Sentence
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Instead, the collapse results in a faint supernova with significant fallback, in which the heavier elements from the star’s core, such as oxygen, are sucked back past the event horizon and trapped in the black hole beneath.
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Jacek Krywko, ArsTechnica, 13 May 2026
Researchers now hope to push the double copy framework even further by searching for particle-physics equivalents of other black hole features, including the event horizon itself — the boundary beyond which nothing can escape.
—Rupendra Brahambhatt, Interesting Engineering, 9 May 2026
Many of Gore’s predictions center on a half-century event horizon, but not even halfway to that point, many of the forecasts have already come true.
—Steven Zeitchik, HollywoodReporter, 22 Apr. 2026
Like all black holes, primordial black holes have mass and thus interact with gravity and are effectively invisible due to the fact that they are bounded by a light-trapping surface called an event horizon.
—Robert Lea, Space.com, 10 Apr. 2026
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Jacek Krywko, ArsTechnica, 13 May 2026
Researchers now hope to push the double copy framework even further by searching for particle-physics equivalents of other black hole features, including the event horizon itself — the boundary beyond which nothing can escape.
—Rupendra Brahambhatt, Interesting Engineering, 9 May 2026
Many of Gore’s predictions center on a half-century event horizon, but not even halfway to that point, many of the forecasts have already come true.
—Steven Zeitchik, HollywoodReporter, 22 Apr. 2026
Like all black holes, primordial black holes have mass and thus interact with gravity and are effectively invisible due to the fact that they are bounded by a light-trapping surface called an event horizon.
—Robert Lea, Space.com, 10 Apr. 2026
See All Example Sentences for event horizon
Cite this Entry
“Event horizon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/event%20horizon. Accessed 21 May. 2026.
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