'The Expanse' Cast Celebrated Season 4 Renewal by Slapping Astronaut Buzz Aldrin on the Back

When Amazon announced The Expanse would be renewed for a Season 4, the cast had the chance to celebrate with a real astronaut, even if he wasn't expecting it.

On The Amazon Blog, the cast and crew of the science fiction series recounted their excitement upon learning the series would be renewed at a National Space Society event. "The Rocinante is safe," Amazon CEO Jeff Bezos told the assembled audience, referencing one of the show's primary shipboard settings and confirming that Amazon Prime Video would pick up The Expanse after Syfy cancelled the series midway through its third season.

The Expanse cast members in attendance included Steven Strait (James Holden), Cas Anvar (Alex Kamal), Wes Chatham (Amos Burton)—three crew members of Rocinante—and Cara Gee, who plays Belter Camina Drummer, last seen captaining the ship Behemoth. But when The Expanse Season 4 was made official, Chatham reached out to an unexpected spacefarer in celebration.

"We were all jumping around and we were all excited," Chatham said. "I was patting some guy on the back. And he turned around—and it was Buzz Aldrin! And he was annoyed that I was patting him on the back. He was like: 'I don't know you.'"

"A pat on the back from him is really strong," cast member Dominique Tipper, who plays Rocinante engineer Naomi Nagata explained. Chatham's character Amos has a rough and tumble past and a dangerous violent streak, with a build to match. As Amos would say: "I am that guy."

WITH CAST PRESENT @JeffBezos just announced here at @ISDC: “The Expanse is saved.” Room erupts. #SaveTheExpansepic.twitter.com/XUXyaUDmds

— Mike Mongo (@MikeMongo) May 26, 2018

The Expanse Season 4 renewal was announced at the National Space Society's International Space Development Conference because of the show's large fan base among scientists and engineers (that Bezos can connect The Expanse vision of a spacebound human future with his private space venture Blue Origin likely also had something to do with it). The Expanse has always been known for its relative scientific rigor compared to many other space opera series, placing realistic constraints on spacecraft maneuvering, battles in vacuum and solar system-wide travel.

"Part of the attraction of this show is that worlds we're creating feel more real," showrunner Naren Shankar told the Amazon blog. "Space is really a character in this series and feels more real than in some other sci-fi shows."

While the 89-year-old Aldrin, the second man to walk on the Moon during the Apollo 11 mission, may have been baffled to find himself roped into The Expanse Season 4 celebration, he must be familiar with the show, having shot a promotional video for the series all the way back in 2015, just before the series premiere.

The Expanse, based on the nine-book series from co-authors Daniel Abraham and Ty Franck (published under the joint pseudonym James S.A. Corey), is expected to premiere Season 4 on Amazon Prime Video sometime in 2019.