It undergoes phase change and becomes a liquid.
When a spinning mass of gas contracts, its speed of rotation will increase due to the conservation of angular momentum. This is similar to how a figure skater spins faster when they pull in their arms. As the gas cloud contracts, it spins faster to maintain its momentum.
When the Deltoid contracts the humerus abducts.
When the bicep contracts the triceps relax
When a muscle contracts, it shortens in length.
right
It contracts.
It contracts. solid
Points The toes
It contracts
A nebula.
relax
It morphs into a diaper.