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Nobody knows. There is no estimation of how many stars there are and how many stars have planets. In our Solar System, since Pluto got downgraded to a 'dwarf planet' there are eight.
Pluto was always weird -- an eccentric orbit at a weird tilt, way off from the others. So it mostly makes sense to say eight. A lot of people got upset, but we haven't heard a word from Pluto.
In recent years, many planets were discovered orbiting other stars, they are known as exoplanets. There are about 350 known exoplanets, and the number is growing all the time.
What else can I help you with?
How many planets in your univerese?
The number of planets is not known. The number of stars is not known either, nor if all have planetary systems. Certainly many billions of billions.
How many planets are outside our solar system?
There are more than 300 planets currently known to be outside our solar system.
How many planets are and are they inhabited?
There are 8 planets in our solar system. As of now, Earth is the only planet known to be inhabited by life.
How many planets rotate the sun?
There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.
How how many planets?
Nobody knows for sure, but there is so many, that there might be more planets than people on earth!
How many planets in the Earth?
The earth is a planet, it has no known planets within.
How many known planets were there in 1791?
MercuryVenusEarthMarsJupiterSaturnUranus
How many basic planets are there?
Currently there are 353 known extrasolar planets (that is to say, outside of our solar system), but it is unknown how many planets exist in the universe.
How many planets in your univerese?
The number of planets is not known. The number of stars is not known either, nor if all have planetary systems. Certainly many billions of billions.
How many planets does the comet galaxy have?
It is not generally known how many planets are in each galaxy; it isn't even known how many planets are in our own galaxy, and will probably never be known exactly, due to its enormous size. However, according to latest observations, it seems likely that every star has several planets, at least on average.
How many stars with planets?
There are more than 300 known stars with known planets, and the list gets longer all the time.
How many planets have been found?
There are 464 extrasolar planets, and 8 planets within our Solar System. This makes a total of 470 known planets.
How many planets were unknown in 1769?
It's easier to ask how many were known, and the answer is six.
How many planets were known to the Egyptians?
The Egyptians along with many other cultures would have known about the six naked eye visible planets. (Mercury, Venus, Earth - obviously), Mars, Jupiter and Saturn.
How many planets are outside our solar system?
There are more than 300 planets currently known to be outside our solar system.
Why the inner explain planets are known as terrestrial planets?
The inner planets are known as terrestrial planets because they are rocky like earth
What planets are known as the light planets?
mercury and venus are known as light planets, because they are closest to the sun.
