Saturday, September 25, 2010

sperm vs stars

Is there more sperm or more stars in the universe?

*World male population of "reproductive age" = 2.17 billion (Males aged 15-64)

*Average amount of sperm per ejaculate = 300 million

*Total sperm if everyone ejaculated= 6.5e17

*Total amount of stars in Milky Way = 1e11


*total sperm produced in lifetime = 525 billion

*total male population = 3.3 billion

*total sperm for every male currently living during their lifetime = 1.73e21

*total stars in universe= 1e21

population (CIA)
sperm (wikipedia)
stars (nasa)


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