Where did most of the matter in the solar system end up after the solar system formed?

Icy matter settled in the outer regions of the disk along with rocky material, where the giant planets like Jupiter formed. As the cloud continued to fall in, the center eventually got so hot that it became a star, the Sun, and blew most of the gas and dust of the new solar system with a strong stellar wind.

Do you have options?

your answer is "the 1950's"