On Friday, Star Trek fans everywhere (including many of us here at Ars) mourned the loss of Leonard Nimoy, who famously portrayed Spock, the first officer of the USS Enterprise.

Many colleagues and fans have been expressing their love for him, including Captain Kirk himself.

"I loved him like a brother. We will all miss his humor, his talent, and his capacity to love." -William Shatner http://t.co/U8ZN98tVYp — William Shatner (@WilliamShatner) February 27, 2015

Michael Okuda, the art supervisor for Star Trek: The Next Generation and other series, told Ars by e-mail:

"We haven't heard anything from his family, except that Susan said he passed with his family and rabbi at his side, and that he passed peacefully "with a smile on his face.' We remember his compassion, kindness, and his gentle sense of humor, even under the unrelenting pressure of directing a movie."