The year in which html was first proposed?

1990 is you answer when it was first and originally proposed :) 

1980 was the year in which the HTML was first proposed:)

Floating freely on the flight deck, sally ride communicates with ground controllers in houston during her sts-7 mission in june 1983. sally ride became the first american woman to go into space when she flew on the space shuttle challenger on june 18, 1983

Tracked audio is based on mathematical algorithms.