Vulcan Harp Nebula
The Vulcan Harp Nebula, a purple cloud of gasses roughly 2 lightyears distance from Deep Space 17 seemed nothing more than a stellar nursery until the accidental formation of the stable end of a wormhole on Stardate 238702.21 during the drive-test of an alien subspace-corridor device aboard the USS Ronin intersected with an interphase rift created by Alternate Jackford Kolk aboard an alternate version of the USS Trial. The Trial crumbled due to the stress of travelling through the rift, but the subsequent wormhole remains, to be explored at Starfleet's discretion.