The telestial kingdom is the lowest of the three degrees or kingdoms of glory in heaven. The scriptures compare the glory of the telestial kingdom to the glory of the stars.
Linda Christensen, “My Life Is a Gift; My Life Has a Plan,” Liahona, January 2008
“Charting the Plan,” New Era, July 2006
“The Three Kingdoms of Heaven,” Friend, February 1986
“Three Degrees of Glory,” The Latter-day Saints Channel Q&A, episode 11
“The Three Kingdoms of Heaven,” Scripture Stories—Doctrine and Covenants Stories, episode 19