Aron Eisenberg, the actor who played Nog in Star Trek: Deep Space Nine, has died at the age of 50. As Nog, Eisenberg was a recurring guest star who appeared in 40 episodes of the series, charting Nog's course as he grew up to become the first Ferengi to serve in Starfleet.

Members of the Star Trek family are mourning the loss of Eisenberg. Some have taken to social media to share their remembrances of the actor. You can read some of them below.

Eisenberg was born with a single, partially-functioning kidney. He received a kidney transplant when he was 17 years old. In 2015, he required a second kidney transplant. He waited on the transplant list for four months before a friend, Beth Bernstein, volunteered her own kidney for the procedure. He underwent a successful transplant on December 29, 2015.

The cause of Eisenberg's death has not been revealed. He is survived by his wife Malissa Longo, his mother, and his two children, Christopher Ryan Eisenberg and Nicholas Lawrence Eisenberg.