Question

What did gravity create when 99% of the gas and dust materials were gathered into the center of a flattened disc during the formation of the solar system?
A. the asteroid belt
B. the planets
C. the sun
D. the moons of planets

Answer 1

C. the sun

Gravity pulled about 99% of the disk's mass into the center, forming the protosun (the Sun). The remaining material in the flattened disk later accreted into planets, asteroids, and moons.