Harlak
Harlak was a planet in the Alpha Quadrant.

In the mirror universe, Harlak had at least one moon and its surface was dotted with the ruins of large cities.

In 2254, the Terran Empire rebellion established a camouflaged base in the northern hemisphere of this planet. For two years, the base coordinated the rebellion against the Terran Empire before Imperial Intelligence discovered its location in 2256. Captain  of the  was ordered to destroy the base and kill all rebels on Harlak, but unknown to them Burnham had been replaced by her counterpart from the prime universe. She instead chose to warn the rebels, who began evacuating.

Before the evacuation could be completed, however, the  entered the system and carried out Burnham's mission, unleashing an orbital bombardment that devastated both the base and a wide expanse of the planet's surface. ()

In 2259, the location of this planet was labeled on a stellar cartography chart that was seen on the 's ready room viewscreen. This planet's symbol had a blue color, indicating that it was affiliated with the . () 

Mirror universe
Planets