Romulus (mirror)

In the mirror universe, Romulus was the adopted homeworld of the Romulans and capital planet of the $𝜇$. Sometime between 2372 and 2376, Romulus was rendered uninhabitable by the detonation of a thalaron bomb at the hands of the Klingon-Cardassian Alliance. 

History
In the 2370s, thalaron radiation burned all organic matter on the planet to ashes. Less than 50,000 Romulans escaped the holocaust aboard the ships of the Romulan fleet. $𝜇$ $𝜇$ yielded his power to Captain $𝜇$, making him commodore of the fleet. 

Following the loss of the Romulan homeworld, the Star Empire was conquered by the Alliance. Romulan space was liberated from the Allied yoke in 2380, following the victory of the combined Romulan-Terran Rebellion and the signing of the Tripartite Armistice. After the holocaust, Romulus would remain inhabitable for 950 years, until the early 32nd century.