Partially your answer was correct, only it was not open on opening day!Originally Posted by ralfrick
The AstroJets were opened in 1956 on the ground. The attraction closed in 1966, only to be replaced the following year by the Rocket Jets from 1967 to 1997 on the upper deck above the Peoplemover. Disneyland opened to the press July 17th,1955. Offiically Disneyland opened to the public on the 18th. Just a little FYI. IMO I hope it goes back to the Upper deck where it should have stayed.
Cheers back at ya.