How many solar systems are there in the universe? Answer: Actually, there are hundreds of billions. There are more stars than we even know of, and if even a fraction of these stars are the centers of their own solar systems, there are too many to count! Email Question    Print Question

Why are there different money systems in the different countries? When countries are formed, most prefer to form their own monetary system so that their economy is not dependent on... How may galaxies are there in this Universe, and how many stars are there? In the portion of the universe we can observe, there are at least a hundred billion galaxies! But we don't know how...