How to Use event horizon in a Sentence
event horizon
noun-
The greater the mass, the wider the event horizon.
—Robert Lea, Space.com, 10 Sep. 2025
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The bad news is that the event horizon marks the edge of the abyss.
—Chris Impey, The Conversation, 30 Oct. 2020
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Like all black holes, the huge ones are shielded from view by an event horizon.
—Chris Impey, The Conversation, 30 Oct. 2020
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The event horizon blocks all attempts.
—Conor Feehly, Big Think, 10 Mar. 2026
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But this is the first time an event horizon has been imaged directly.
—John Wenz, Popular Mechanics, 10 Apr. 2019
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That is kicking it backward, keeping the white dwarf clear of the event horizon.
—Robert Lea, Space.com, 13 Jan. 2025
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This is the region just outside the event horizon where space itself spins with the black hole.
—Kelso Harper, Popular Mechanics, 2 July 2021
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The key issue is whether spacetime at a black hole’s event horizon can be treated as smooth.
—Natalie Wolchover, WIRED, 30 June 2019
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If so, its event horizon would be just under two centimeters across, the size of a grape!
—Phil Plait, Scientific American, 27 Mar. 2026
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Matter that falls below an event horizon still exists; it's just locked away from view.
—Paul Sutter, Space.com, 25 Aug. 2025
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Nothing can escape the black hole’s threshold, called the event horizon.
—Jacopo Prisco, CNN Money, 16 June 2026
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That distance marks the black hole’s defining feature, its event horizon.
—Byadrian Cho, science.org, 4 Jan. 2023
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The shoe-shop event horizon Lobb, and firms like it, make shoes using patterns called lasts.
—The Economist, 22 May 2018
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What would happen if such a pair were to come into existence right at the event horizon?
—Jerry Adler, Newsweek, 14 Mar. 2018
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The event horizon doesn’t exist in the same way that the surface of a planet exists.
—Paul M. Sutter, Discover Magazine, 26 July 2023
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This crystal ball may be like a black hole with an event horizon, past which the light of its insight cannot escape.
—Ross Andersen, The Atlantic, 11 Feb. 2026
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The fake event horizon even showed signs of glowing in the lab where the researchers created it.
—Joshua Hawkins, BGR, 20 Nov. 2022
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Some models even map the electron behavior to the physics of event horizons around black holes.
—Douglas Natelson, Scientific American, 19 Mar. 2024
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Within the photon ring is the shadow of the black hole, the point of no return known as the event horizon.
—Ashley Strickland, CNN, 25 Sep. 2019
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The event horizon is the edge of the black hole, the boundary beyond which nothing can escape, even light.
—Brian Resnick, Vox, 26 July 2018
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Within seconds he was blasted to the cosmos and entered the event horizon of a black hole.
—Will Yakowicz, Forbes, 18 Oct. 2021
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The issue begins with the end of the union of the two particles straddling the event horizon.
—Ahmed Almheiri, Scientific American, 1 Sep. 2022
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This limit is related to the fact that there is only one black hole and therefore just one event horizon.
—Edgar Shaghoulian, Scientific American, 22 Aug. 2022
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The black hole has no finite size, but there is this abstract size of the event horizon, which is the last point that light can escape.
—Corinne Purtillstaff Writer, Los Angeles Times, 13 May 2022
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Perhaps the most recognizable part of a black hole is its surface, known as the event horizon.
—Popular Mechanics, 8 Sep. 2023
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That is because, like all black holes, they are bounded by a one-way light-trapping surface called an event horizon.
—Robert Lea, Space.com, 19 Dec. 2024
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All the information about that stuff gets locked away behind the event horizon, never to be seen again.
—Popular Mechanics, 31 July 2023
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After falling past the event horizon — the point of no return — nothing can escape a black hole.
—Alison Klesman, Discover Magazine, 24 Sep. 2018
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The physics of the event horizon is a long-standing problem in quantum mechanics.
—Andrea Gawrylewski, Scientific American, 29 Aug. 2023
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That means the event horizon is a one-way barrier for information.
—Robert Lea, Space.com, 26 June 2026
Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'event horizon.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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