The first test of light speed flight has gone wrong, hurling an astronaut deep into the future where he searches the planets for remnants of the human race. 12 Episodes. Created, written and directed by Alexander Adell.
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Celeritas creator Alexander Adell is writing his next project in public, follow on Instagram to watch the train wreck: https://www.instagram.com/reel/C_deDLtoROk/
Latest episodes
Showing 16 · updated from the feed
Director Commentary on Episode 3
Director commentary on episode 3 with writer / director Alexander Adell
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Dec 6 2024 24 min
Director Commentary on Episode 2
Director commentary on episode 2 with writer / director Alexander Adell
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Nov 19 2024 29 min
Director Commentary on Episode 1
Director commentary on episode 1 with writer / director Alexander Adell
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Oct 23 2024 39 min
S1E12 | The Seahorse
The final step in the journey is against his will. Episode 12 of 12.
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May 3 2024 42 min
S1E11 | The Forest
Owen steps out of an escape pod, into a forest. He might be home. Episode 11 of 12.
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Feb 9 2024 32 min
S1E10 | The Tube
Owen is trapped on a base floating in Jupiter's atmosphere. Episode 10 of 12.
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Jul 29 2023 31 min
S1E9 | The Vacuum
Owen makes one last attempt to get home in a ship with no air. Episode 9 of 12.
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Mar 17 2023 26 min
S1E8 | Technecene
What Owen finds on Venus is not what he expected. Episode 8 of 12.
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Nov 26 2022 29 min
S1E7 | Venus
Owen crosses the solar system once again, battling his health and his sanity, with an unforgiving destination. Episode 7 of 12.
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Aug 27 2022 23 min
S1E6 | The Moon
Owen lands on the moon, and is met with horrifying surprises. Episode 6 of 12.
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Jun 25 2022 21 min
S1E5 | Water
Owen endures one last ordeal before returning home. Episode 5 of 12.
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Apr 9 2022 16 min
S1E4 | The Climb
A dangerous space walk forces Owen to reckon with a shocking realization. Episode 4 of 12.
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Feb 15 2022 10 min
S1E3 | P.O.L.O.
Owen discovers that some of the unnecessary experiments packed into his ship may save his life. Episode 3 of 12.
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Feb 15 2022 10 min
S1E2 | Thirty-Two
Captain Owen Keating starts to grasp his circumstances, and may have a solution. Episode 2 of 12.
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Oct 21 2021 11 min
S1E1 | Engine Test 2B
Owen fails to have a normal conversation with his daughter during a spacewalk. Then a routine engine test is anything but. Episode 1 of 12.
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Oct 13 2021 13 min
Celeritas Trailer
The first test of light speed flight has gone wrong.
Experience Celeritas, the podcast that Engadget says "expands the possibilities of the aural medium."
Winner of the
Oct 6 2021 1 min
Chart trend
Position in the Science Fiction chart (US), last 90 days.
#1#101#200JulAugSepOct
#29
all-time peak
81
days in the top 50 since Nov 2024
Chart positions
Where Celeritas ranks today in each Apple Podcasts chart (US, Oct 9, 2026).
A curated, balanced selection of Apple Podcasts reviews.
I loved it. Immersive audios are my favorite! I did not have a hard time following along, I think where people got lost at certain points are what I realized were aspects of human emotion and confusion along with disbelief.. also going a bit crazy and being lonely. His memories, his personal hardships, etc. took me along for the entire journey. I wish there was more, but I don’t think the ending disappointed. He finally got his daughter back.
Harmful3 · Feb 2026
Celeritas is an absolute masterpiece.
Carefully crafted from start to finish, this fully immersive show will grip you with its talons from the very start and refuses to let go.
Yes, there is a lot of breathing and panting as some other reviews have noted. But it’s consistent and accurate to the environment and the experience.
Beautifully mixed audio, feels like you are watching Gravity or Interstellar, but on the iMax of your own imagination.
Give it the space and the attention it deserves. Not a casual or background listen.
MuskratProductions · Sep 2024
I listened to the entire season on a Sunday morning. It drew me in, made me laugh and cry; excellent writing and story! I’ve listened to many different sci fiction podcasts and this one stands out as one of the very best. Great job!
mlf717 · Jun 2024
Up to about episode 12, and while there are interesting parts, it is also difficult to grasp. There are parts that could use way more description, with much yelling or noise effects that don’t describe what’s going on. It is difficult to follow a story that doesn’t paint a clear(ish) picture.
It’s also difficult to tell what the relationships actually are between the characters.
In all I’d say there’s a lot in the creator’s mind that’s not communicated well.
phukapplesheit · Nov 2024
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Here you find the Apple Podcasts chart positions of Celeritas, its latest episodes to listen to directly, and reviews from listeners. Rankings are updated daily for the United States.
