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  • ... that the International Space Station can often be seen from Earth with the naked eye?
  • ... that Wikipedia is written collaboratively by volunteers around the world?
  • ... that a group of flamingos is called a flamboyance?
  • ... that the first practical telephone exchange opened in New Haven, Connecticut, in 1878?

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On this day

October 20

  • 1818 – The United States and the United Kingdom agree on the 49th parallel as part of their border.
  • 1968 – The 1968 Summer Olympics close in Mexico City.
  • 1973 – The Sydney Opera House is officially opened.

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Earth as seen from space
A view of our home planet, one of the billions of worlds in the observable universe.

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