Fossil Ida: extraordinary find is 'missing link' in human evolution.
IDA WAS just 58cm (23inches) long and nine-months-old when she died 47 million years ago, but scientists are confident the cat-like creature is the common ancestor of all primates. http://www.irishtimes.com/newspaper/world/2009/0521/1224247034331.html
Thra has three suns; the Great Sun, the Rose Sun, and the Dying Sun. Many creatures and races inhabit the planet, but the dominant race is the urSkeks, ...
One thousand years before the beginning of the movie, during the Great Conjunction of the three suns, the urSkeks cracked the Crystal of Truth, and split into two races; the hunchbacked, gentle beings known as urRu or "Mystics" and the vulture-like tyrants known as Skeksis.
In that moment the Crystal became the Dark Crystal.
The Skeksis then drove the urRu from the castle where the cracked crystal resided and instituted a reign of terror over their world.
Their wrath was particularly directed toward the elf-like Gelflings, due to a prophecy that promised the restoration of the crystal and the end of the Skeksis' power.
Left: Skesis Right: Mystic
Repairing the Crystal to make the Illuminated ones
Skesis & Mystic combined