Question

what do gravity create when 99% of the gas and dust materials were gathered into the center of the flattened disc during the formation of the solar system

Answer 1

When 99% of the gas and dust materials were gathered into the center of the flattened disc during the formation of the solar system, gravity created a protostar at the center. The intense pressure and heat at the core of the protostar triggered nuclear fusion, leading to the formation of a star. This star eventually became our Sun, with the remaining gas and dust materials in the disc eventually coalescing to form planets, moons, asteroids, and other celestial bodies in the solar system.