According to the nebular hypothesis, which of the following is true?
The nebula expanded outward.
Gas and dust flattened into a disk shape.
The sun used up all the gases in the nebula.
The planets were created by the solar wind.
The nebula expanded outward.
Gas and dust flattened into a disk shape.
The sun used up all the gases in the nebula.
The planets were created by the solar wind.