Misc: In 1971 Louis "Satchmo" Armstrong jazz musician (Hello Dolly), dies at -------------?

Questions

What was the name of the space shuttle that exploded?

What is the name of the telescope that was placed in orbit in the eighties?

What computer game featured a disco leftover looking for love?

What was the inexpensive designer watch of choice amongst teenagers during the eighties?

Which rock group of the eighties gave away a silver keychain at every concert, which was supposed to bring good luck to whoever caught it?