Approximately 106 billion people have been born on Earth.
There are currently about 7 billion people living on Earth.
As of now, there is no evidence to suggest that any form of life, including humans, exists on Mars. It is currently uninhabited by people.
if you mean how many people have visited from different planets, none. If you are wondering how many people have left earth, gone to a different planet, and come back, there would be mabey around sixty. If you are wondering how many people are on the earth then that would be around six billion
There are just over 7 billion as of November, 2011.
Only the Earth, as far as we currently know.
There are three people currently aboard the International Space Station.
It is currently unknown
There are approximately 8.7 million species currently on Earth.
Atleast over 200,000,000
As of now, there is no evidence to suggest that any form of life, including humans, exists on Mars. It is currently uninhabited by people.
Jupiter is a gas giant planet and has essentially no solid surface so no people could live on Jupiter. If Jupiter were magically a solid planet with earth's gravity, climate and resources but the size of the real planet Jupiter, it cold probably support 100 times as many people as the Earth currently does.
Currently (March, 2014), 63 have been confirmed.
How many people does Pennsylvania currently have in each house or congess?
There are approx 7 billion.
There are currently 5 dwarf planets that are being recognized.
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7,107,761,500
if you mean how many people have visited from different planets, none. If you are wondering how many people have left earth, gone to a different planet, and come back, there would be mabey around sixty. If you are wondering how many people are on the earth then that would be around six billion