No one knows for sure but it will be in the billions.
There are no known alien civilizations in our universe.
Probably not many, maybe thousands, Universe is a 20 year old technology like COBOL
The natural and fundamental laws of the universe. Many of which we have yet to understand completely.
No; the two are quite different. The Universe is everything we can see; it contains many galaxies.
The answer is not determinable both because scientists have not determined the exact volume of the universe and because the universe is always expanding.
yes
Galxies were once thought to be nebulaes
Nebulae are found in various places throughout every galaxy.
Nebulae are made of clouds of hydrogen and other elements or clouds of dust (dark nebulae)
Actually a galaxy is in a universe
Well, the universe never stops so... the universe does not have a center.
there are 21 major religions in the universe
The foundations of the universe are debated among many scholars. Many believe that the universe's foundation and emergence came from the combining of simple elements like hydrogen and oxygen.
There are about 40 levels in Lego Universe.
The Catalogue of the Universe has 224 pages.
The Ambidextrous Universe has 276 pages.
Captive Universe has 185 pages.