Our Earth is one of the eight Planets that revolves around the Sun in our Solar System. There are 100 Billion Solar Systems like ours in the our galaxy known as the Milky Way. And there are 100 billion of such galaxy in our universe.
It was estimated that there must be "billions upon billions" of stars in the universe. And probably a third may have a planetary system like ours and possibility of life forms. Because no one know how big this Universe is, so on one can estimate something that is infinite.
The universe we lived in is a big, big place.
Updated On: 15.02.17