What is universe how many galaxies in universe?

All existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies.
The universe is believed to be having many galaxies;it's not yet confirmed by the scientists.


Universe is the place where planets,stars, asteriods , comets,and many other celestial objects.the universe contains many galaxies from which one is ours the milky way . now also scientists are doing research to find the various galaxies
The vast empty space around us that consists of stars, solar system, galaxies etc is called Universe. there are  100 billion to 200 billion galaxies in universe