asteroid belt
noun
: the region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found
Examples of asteroid belt in a Sentence
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This artist's concept depicts the 140-mile-wide (226-kilometer-wide) asteroid Psyche, which lies in the main asteroid belt between Mars and Jupiter.
—
Jamie Carter, Forbes.com, 27 Mar. 2026
Most asteroids are found in the asteroid belt between Mars and Jupiter, but some travel on paths that bring them closer to Earth — these are called near-Earth asteroids.
—Marley Malenfant, Austin American Statesman, 19 Feb. 2026
Electric propulsion is used to keep satellites in their proper orbit and to power space probes like Dawn, which NASA sent to explore the asteroid belt.
—Noah Shachtman, Wired News, 9 Feb. 2026
Like all but one of the newfound superfast rotators, the record-setting space rock, called 2025 MN45, resides in the main asteroid belt between Mars and Jupiter.
—Mike Wall, Space.com, 8 Jan. 2026
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Jamie Carter, Forbes.com, 27 Mar. 2026
Most asteroids are found in the asteroid belt between Mars and Jupiter, but some travel on paths that bring them closer to Earth — these are called near-Earth asteroids.
—Marley Malenfant, Austin American Statesman, 19 Feb. 2026
Electric propulsion is used to keep satellites in their proper orbit and to power space probes like Dawn, which NASA sent to explore the asteroid belt.
—Noah Shachtman, Wired News, 9 Feb. 2026
Like all but one of the newfound superfast rotators, the record-setting space rock, called 2025 MN45, resides in the main asteroid belt between Mars and Jupiter.
—Mike Wall, Space.com, 8 Jan. 2026
See All Example Sentences for asteroid belt
Cite this Entry
“Asteroid belt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/asteroid%20belt. Accessed 21 Apr. 2026.
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