Star of Bethlehem. A listing from 1970 includes shows titled The Story of Eclipses, which looked at how solar eclipses occur and their scientific importance, Man and the Zodiac which explored the history of mythology and astrology with regard to the night sky, and The Planet Venus which surveyed the history of the planet in mythology, the planet's motion across the sky and featured imagined views from its surface. Renovations in the late 1970s and early 1980s When plans were drawn up for a major expansion of the adjacent Royal Ontario Museum in the mid-1970s, it was initially assumed that the planetarium, then still a comparatively new facility, would be left untouched. As the scope of the expansion increased, it was realized that its north annex would need to be demolished in order to make way for the museum's need for a wing devoted to curatorial facilities. As a result, a theatre entrance, sound studio, workshop, passenger elevator and a third of the existing gallery area of the planetarium had to go. The remaining gallery area was removed in March 1978 to make space for temporary space to replace the workshop and studio. Significant changes to the planetarium were made during this time, including the addition of a new spiral staircase that led straight to the Theatre of the Stars, an adjacent elevator for the elderly and disabled, and a larger gallery space on the second floor. The planetarium remained at normal levels of service during this renovation period, but attendance dropped significantly, particularly when the adjacent museum was closed for a period of two years during the most intensive phase of its second major expansion. In all, the construction phase lasted for four years, from 1978 to 1982. In particular, some school groups that could justify the expense of seeing the museum and a planetarium show in a single day's outing had difficulty justifying a visit solely to the planetarium. The 1980s and early 1990s Some of the automated "star shows" that appeared in this time interval include: "Planets, Stars, and Galaxies", a general show about our knowledge of astronomy at the time; "Mars, the Journey Begins", the story of the exploration of Mars (from prehistory to the then-present), and possible future plans for terraforming Mars; "Beyond the 4th Dimension", which explored, in layman's terms, the 4 dimensions of General Relativity, the Big Bang and inflation, and the new