He was carefully observing the surroundings.

A black hole absorbs surrounding matter with its immense gravity.

His powerful influence was felt by all people.

His immense power was such that everyone feared him.

The suction power of this vacuum cleaner is very strong.

He took a deep breath and inhaled the fresh air.

What is this material made of?

The gravity of the Earth is stronger than the gravity of the Moon.

In a state of weightlessness, objects float freely.

The study of gravitational waves contributes greatly to our understanding of the universe.