This astronomy program, designed for persons ages 12 and up, was released in 1984 and included a 138-page manual. It provided an interactive guided tour of the universe—in the past, present, and future. The universe model could show the location of more than 1,200 stars, 88 constellations, 8 planets, deep sky objects, and the (then) future appearance (1986) of Halley’s comet. The program had four basic modes: map, set, sky, and chart. Map was used to select the location on Earth; month, day, year, and time were determined in set; optional displays were chosen in sky; and chart was used to project the sky on a celestial sphere with coordinate lines for creating, viewing, and printing your own star charts.

Here's are some links to the manual (including cheat sheet and easter eggs) and the addendum.  Additionally, here is a link to an article in the June / July issue of TPUG reviewing the Sky Travel program.