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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First, the outer boundary of these cosmic titans is a one-way light-trapping surface called an event horizon, the point at which a black hole's gravity is so powerful that not even light can escape.
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Robert Lea, Space.com, 24 Mar. 2025
For example, the inside and outside of a black hole are decoupled by a boundary called the event horizon.
—Lyndie Chiou, Quanta Magazine, 24 Feb. 2025
Black holes have an event horizon, an invisible one-way boundary at their edge that not even light is fast enough to escape.
—Paul M. Sutter, Scientific American, 1 Apr. 2025
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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Robert Lea, Space.com, 24 Mar. 2025
For example, the inside and outside of a black hole are decoupled by a boundary called the event horizon.
—Lyndie Chiou, Quanta Magazine, 24 Feb. 2025
Black holes have an event horizon, an invisible one-way boundary at their edge that not even light is fast enough to escape.
—Paul M. Sutter, Scientific American, 1 Apr. 2025
That is kicking it backward, keeping the white dwarf clear of the event horizon.
—Robert Lea, Space.com, 13 Jan. 2025
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 19 Apr. 2025.
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