Nyemorian are one of the independent civilizations in Master of Orion.
Based on your telemetry readings, you arrive at Nyemor fully expecting to be escorted by Battlecruisers. However, you find a race of peaceful beings with incredibly advanced technologies but mysteriously without space travel.
A magocracy is a fantasy system where political power is given to those who can demonstrate magical power, with the strongest wizards being at the top. With the technological focus of the Nyemorians, it can be assumed that their "wizards" are in fact the best scientists and engineers they have.