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If they're undiscovered, how are we supposed to know?
The likelihood that there is an undiscovered planet ... as opposed to an undiscovered minor planet ... in the Solar System is approximately nil.
Astronomers estimate that there are as many as 100 billion to 400 billion planets orbiting other stars in our galaxy.
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoPlanets in the universe that we're ABSOLUTELY CERTAIN of? About 40.
Planets that we're ALMOST certain of? About 3000.
The most probably minimum number of planets in the universe? Quadrillions or more.
The Kepler space telescope has reasonable indications at there are planets orbiting about half of all the stars that they have examined, and the nature of the Kepler telescope prevents it from detecting more than a small fraction of the planets that are there. It's likely that there are planets orbiting virtually every star in the galaxy, and there are over a trillion stars just in the Milky Way.
"Quadrillions" is probably an unrealistically _low_ number!
Wiki User
∙ 12y agoAs of November 2011, about 700. New exoplanets are found regularly, though.
Wiki User
∙ 11y agoAs of early 2013, a bit over a thousand planets are known. However, it is estimated that most, perhaps all, stars have at least one planet.
Wiki User
∙ 13y ago280
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How many new exoplanets were found by European Astronomers?
This question is being awnswered in 2014 so it is as of 2014.1,653 dumbhead.
About how many species of angiosperms can be found today?
About 250000 of them have been found.
How many exoplanets do we know of?
Now we know of 861 exoplanets, with several thousand awaiting confirmation
How many solar systems have been found?
1,00000,000 have been found.
How many solar systems have exoplanets?
It is too premature to give percentages. Several hundred planets have already been found around other solar systems; but so far, mostly giant planets have been found, most of them larger than Jupiter.It is too premature to give percentages. Several hundred planets have already been found around other solar systems; but so far, mostly giant planets have been found, most of them larger than Jupiter.It is too premature to give percentages. Several hundred planets have already been found around other solar systems; but so far, mostly giant planets have been found, most of them larger than Jupiter.It is too premature to give percentages. Several hundred planets have already been found around other solar systems; but so far, mostly giant planets have been found, most of them larger than Jupiter.
How many new exoplanets were found by European Astronomers?
This question is being awnswered in 2014 so it is as of 2014.1,653 dumbhead.
How many planets exists?
There are 8 planets within our solar system. They are:MercuryVenusEarthMarsJupiterSaturnUranusNeptuneOutside of our Solar System, there are possibly billions, although as of Aug 2010, only 490 exoplanets have been found - but this number is increasing almost daily.See related link for a current list of exoplanets.
About how many species of angiosperms can be found today?
About 250000 of them have been found.
How many exoplanets do we know of?
Now we know of 861 exoplanets, with several thousand awaiting confirmation
How many exoplanets were recently discovered?
about 403.
Which are the solar systems discovered in the 21st century?
There are many exoplanets that have been discovered during the last 12 years. See the sources and related links below for Wikipedia's article on exoplanetary systems. Most were found this millennium.
Is Earth the only planet?
Earth is one of many planets. There are 8 planets in our own solar system and over 400 exoplanets found so far.
Did Michael Jackson use Demerol?
many drugs were found in his system, nothng has been proven as of today as to how they got there.
About how much many exoplanets have been foun about how big is the biggest one?
As of October 28, 2009 a total of 403 exoplanets have been discovered to date. The mass of an exoplanet is limited by classification. A planet's mass has an upper limit of 13 Jupiter masses as this is the upper limit for an object that can not fuse Deuterium. Any "exoplanet" larger than this limit is generally considered a brown dwarf.
How many paintings of 19th century Charles haynes are found in museums today?
how many paintings of 19th century charles haynes are found in museum today ?
How many solar systems have been found?
1,00000,000 have been found.
How many dinosaur skin fossils have been found?
No skins have been found, but plenty of bones have been found.
