The Big Bang theory explains the origin of the universe.

The big crunch is a hypothetical scenario for the ultimate fate of the universe.

The Big Rip is a hypothetical cosmological model in which the matter of the universe is progressively torn apart by the expansion of the universe at a certain time in the future.

He is a big-time player in the industry.

He made it big-time in the music industry.

He has a great big house.

I rode the big dipper at the amusement park.

He is a big-name actor in Hollywood.

He is a big-league player.

I saw the big dippers in the night sky.