Star Trek: Discovery continues this week with “The Sound of Thunder,” the sixth episode of the season,” and we’ve got a set of new photos from the crew’s journey to Saru’s homeworld of Kaminar from in this week’s adventure.

Back in December’s “The Brightest Star,” we learned about life on Kaminar and how Saru ventured out to the stars, leaving behind his family and Kelpien race, and this week’s episode brings us back to his home and to his sister Sirannah (Hannah Spear).

'Star Trek: Discovery' Episode 206 - 'The Sounds of Thunder' 1 of 10

Along with what looks like a visit from Sirannah to Saru’s quarters aboard the Discovery, this week’s photos also give us a look at Ash Tyler (Shazad Latif) back in Starfleet uniform — albeit with a Section 31 black badge — and Airiam (Hannah Cheesman) at work in the off-bridge science lab.

And in case you missed it, here’s the video preview for the episode, which features a decidedly horrifying alien race — perhaps the Ba’ul species, which has preys on the docile Kelpiens.

View this post on Instagram "Warm up the phasers." All new episode 22 February. A post shared by Star Trek: Discovery (@startreknetflix) on Feb 19, 2019 at 12:29pm PST THE SOUND OF THUNDER — When a new signal appears over Saru’s home planet, Burnham, Saru and the crew embark on a perilous mission that puts Saru in danger and raises questions about the Red Angel’s intentions. Hugh struggles to come to terms with his new reality.

The episode is written by Bo Yeon Kim & Erika Lippoldt and directed by Douglas Aarniokoski.

“The Sound of Thunder” debuts this Thursday on CBS All Access and Space, and beams to Netflix around the world on Friday.