Sut1iffygiayar Sut1iffygiayar
  • 19-11-2016
  • Geography
contestada

Approximately how many other planetary systems have been discovered to date?

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Kimdes Kimdes
  • 24-11-2016
im not sure about the amount but over a billion i guess cause you universe itself is expanding in space and time keeps going so probably by 2020 we find about a million more than we can see
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