AceShowbiz - "Star Trek" family is mourning the death of Nichelle Nichols. George Takei, Kate Mulgrew and other stars offered their final tributes to the late actress after it was announced that she died at the age of 89 on Saturday night, July 30.

"I shall have more to say about the trailblazing, incomparable Nichelle Nichols, who shared the bridge with us as Lt. Uhura of the USS Enterprise," Takei wrote on Twitter on Sunday. "For today, my heart is heavy, my eyes shining like the stars you now rest among, my dearest friend."

Meanwhile, Mulgrew shared a photo of Nichols' character, the capable and commanding Enterprise crew member Nyota Uhura. The caption read, "Nichelle Nichols was The First. She was a trailblazer who navigated a very challenging trail with grit, grace, and a gorgeous fire we are not likely to see again. May she Rest In Peace."

William Shatner also offered his condolences. "She was a beautiful woman and played an admirable character that did so much for redefining social issues both here in the US and throughout the world," he stated. "I will certainly miss her."

J.J. Abrams, who directed the 2009 "Star Trek" reboot and its 2013 follow-up "Star Trek Into Darkness", described Nichols as "a remarkable woman in a remarkable role." He added, "Nichelle, you will be deeply missed. Sending much love and respect."

Nichols' death was confirmed by her son, Kyle Johnson. "Last night, my mother, Nichelle Nichols, succumbed to natural causes and passed away," he said in a statement shared on his mom's official Facebook page. "Her light however, like the ancient galaxies now being seen for the first time, will remain for us and future generations to enjoy, learn from, and draw inspiration. Hers was a life well lived and as such a model for us all."