There is an astronomical number of planets in the universe. We are only now beginning to be able to "see" planets around other stars because of the vast distances that exist between us and them. How many there actually are is anyone's guess.
What we know about galaxies is that the ones we observe contain 200-400 billion stars each. Our solar system contains 8 planets. If we assume each star has 1 planet, and not more, and we average a galaxy to 300 billion stars we can deduce:
The Hubble Deep Field image contains 10,000 galaxies. At 2.5 arcminutes, that's roughly 1/2,000,000 of the visible universe in any direction. So if we multiply 3,000,000,000 x 10,000 x 2,000,000 we get 6 sextillion or 6,000,000,000,000,000,000,000 planets in the visible universe. It is likely much more than that.
Billions certainly, probably billions OF billions. In the last two years since the launch of the Kepler Space Telescope, our "known planet count" has gone from eight to "thousands", and more are discovered every month. It begins to appear that planets are as common as, well, "dirt".
We only _know_ of one universe, THIS one - although there seem to be theoretical reasons why there might be other universes, it seems unlikely that we will ever be able to directly detect them.
Currently there are 8 planets in the universe which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The planet Pluto is no longer considered a planet as it was years ago.
we can't count.
A universe is bigger than a planet.
what is the most beautiful planet in the universe
A planet is bigger than a university. You probably meant a universe and a universe is bigger than a planet.
Nobody knows what is the largest planet in the universe, but Jupiter is the largest planet in the Solar System.
Universe -> galaxy -> star -> planet
Earth is the third planet from out sun, but there is no way of ordering Earth with planets in the entire universe as there are other solar systems. Scientists can only make an educated guess as to how many.
From largest to smallest: Universe; galaxy; solar system; planet.
Planet Solar System Galaxy Universe
Universe: It contains everything.