Episodes
26
2 seasons
26 episodes · 2 seasons · 26.0 hours to binge
26
2 seasons
26.0 h
1d 2h
1 days
non-stop
8.5/10
1,644 votes
Cosmos runs to 26 episodes across 2 seasons, at roughly 60 minutes each. Watching every episode back to back is 26.0 hours of pure run time — that's 1 days and 2 hours without a single break.
More realistically, at two episodes a night you'll finish in about 13 days. That's 3.3 full 8-hour work days of screen time. Use the planner below to pick your own pace and get an exact finish date.
26.0 h
Pure run time
13 days
At 2 episodes/day
60 min
Per episode
Day 13: 100% done (26 of 26 episodes)
13.0
on average
13.0 h
on average
1,560
1 days non-stop
At 26.0 hours, Cosmos is longer than 51% of every series tracked here — making it a solid commitment. Within the Documentary genre the average is 32.7 hours, so Cosmos sits below that.
Cosmos is exceptionally well rated at 8.5/10 from 1,644 votes. With 26.0 hours of total run time it's a few weeks of viewing — plan accordingly before you press play.
All 26 episodes of Cosmos add up to 26.0 hours of pure run time — that's 1 days and 2 hours non-stop.
Cosmos has 26 episodes across 2 seasons, averaging about 60 minutes per episode.
At 1 episode a day it takes 26 days, at 2 episodes a day 13 days, and at a marathon pace of 8 a day just 4 days.
Cosmos is rated 8.5/10 from 1,644 votes. Budget 26.0 hours if you want to watch the whole thing.
Episodes, seasons, runtime (60 min/episode) and rating come directly from TMDB (as of 2/12/2026).
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