how long have we been sending people into space? Or.. when did space exploration start?

Answer 1

You have to define "space"? What altitude?

Answer 2

http://www.seasky.org/spacexp/sky5d.html

Answer 3

Thanks.. um I just need to know how long we have been spending money on space explorations.

Answer 4

about 21 years

http://www.aerospaceguide.net/worldspace/canada.html