A Kelpien science vessel that crashed on a dilithium planet in the Verubin Nebula in the 31st century, where the child Su'Kal was born and, over a century later, was found to have caused the Burn.
The KSF Khi'eth is a Kelpien research ship in the third season of Star Trek: Discovery. She was studying a dilithium nursery in the Verubin Nebula when she crashed on the planet Theta Zeta. One of her crew, Dr Issa, sent out a distress call; she was pregnant at the time.
Her son Su'Kal grew up alone in the wreck, cared for by a holographic programme his mother had made. Changed in the womb by the dilithium and radiation around him, he had a bond with the mineral, and his scream of grief when his mother died sent out the shock that made dilithium inert across the galaxy.
Discovery traces the Burn to the ship's signal in Terra Firma and reaches it in Su'Kal. Saru, Burnham and Culber enter the failing holo-programme, and in That Hope Is You, Part 2 Saru coaxes Su'Kal out before the wreck collapses.