Merseia

Merseia is a fictional planet and later empire in Poul Anderson's Technic History. It first appears in "Day of Burning" from The Earth Book of Stormgate, set in 2433. At this point it is technologically about a century ahead of late 20th century humanity. The story details how Falkayn, Chee Lang, and Adzel negotiate its salvation from a supernova approximately 4 light years away. By the 31st century, the period of the Flandry books, it has grown into an expansionistic interstellar empire, the Terran Empire's primary rival.