Which factor causes gas and dust to pull together during the first stage of star formation?

Understand the Problem

The question is asking about the factor that causes gas and dust to come together during the initial phase of star formation. The options provided indicate this is related to physical forces or properties.

More Information

Gravity is the force that causes gas and dust to collapse, initiating the formation of stars. As these particles are drawn together, they form denser regions where nuclear fusion can eventually occur.

Tips

Mistaking the internal pressure or heat as initial causes rather than factors involved later in the process.

Sources

• Gravity and Energy | Multiwavelength Astronomy - eCUIP - ecuip.lib.uchicago.edu
• Star Formation | Astronomy - Lumen Learning - courses.lumenlearning.com