The Crystalline Entity was a powerful, spaceborne creature characterized by a crystalline structure that resembled a large snowflake. It had warp speed travel capability, formidable size, and the ability to consume all life on a planet or starship. (TNG: "Datalore") Thousands of deaths have been attributed to this entity. The creature was destroyed in 2368. (TNG: "Silicon Avatar")
learn our khans. join the space farce. make sleestaks great again. trust the plane