A planet where scientists led by Doctor Ja'Dar tested the soliton wave in 2368, an experimental means of warp travel without warp engines that went badly out of control.
Bilana III is a planet with a research facility devoted to new forms of propulsion. It appears in the fifth-season Next Generation episode New Ground.
In 2368 the Enterprise-D is asked to assist Doctor Ja'Dar with the first practical trial of the soliton wave. Generators on the planet create a wave of subspace distortion that an unpowered test ship can ride at warp speed to Lemma II, where a matching facility is supposed to disperse it. La Forge compares the moment to watching the first warp flight.
The test ship is destroyed and the wave keeps growing in power, threatening to devastate the colony on Lemma II. The Enterprise has to pass through the wave and detonate torpedoes ahead of it. Meanwhile Worf struggles with the arrival of his son Alexander, who has come to live aboard.