A stellar nursery was a nebula in which multiple stars were being formed. Intense ultraviolet light was often given off by the forming stars.
Trip Tucker once viewed a stellar nursery through a telescope located just outside of Anchorage. (ENT: "Fight or Flight")
There was a stellar nursery along Enterprise NX-01's course early in its mission in 2151. (ENT: "Fight or Flight")
The crew charted another stellar nursery some months later, where according to the Borothans' sacred text the universe began. (ENT: "Cold Front")
In the script for the Star Trek: Deep Space Nine episode "For the Cause", Captain Sisko asks Kasidy Yates if she took the SS Xhosa around the stellar nursery in the Panak sector. [1]
Class T clusters were a type of stellar nursery. (VOY: "Good Shepherd")