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Why did a planet not form in the asteroid belt between Mars and Jupiter?

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Illustration showing the eight planets of the solar system in order from the Sun-Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune-depicted to scale by size, with labeled diameters in miles and kilometers. The Sun is partially visible on the left for comparison. — Solar system The planets (in comparative size) in order of distance from the Sun.

It is a common misconception that the asteroid belt is the result of a planet that broke apart in a cataclysmic event. Scientific evidence indicates that this is not the case; rather, the asteroids are remnants of rocky planetesimals that were prevented from coalescing into a single planet.12

The primary reason a planet did not form in this region is the gravitational influence of Jupiter. During the early history of the solar system, the massive gravity of Jupiter disrupted the accretion process in the region between its orbit and that of Mars. Furthermore, dynamical models—such as the "grand tack" hypothesis—suggest that the inward and outward migration of the giant planets significantly altered the region, scattering material and preventing the formation of a stable planetary body.1234

Today, the distribution of asteroids within the belt continues to be shaped by orbital resonances with Jupiter, which create gaps in the belt and influence the orbits of the remaining material.56