Total Eclipse

In 2020, an international space team, exploring Sigma Draconis, 19 light years from earth, discovers the remains of a highly advanced society that has left behind as its most spectacular artifact the largest telescope imaginable, carved and polished from a natural moon crater. Successive space crews determine that the native culture evolved and disappeared mysteriously after a mere 3,000 years of existence.

It's now 2028. Another mission reaches the planet with just one goal - to discover why the civilization disappeared - and with just one hope - that this knowledge will prevent the same thing from happening on earth.