Season
- Season 2 2013-04-06
- Season 1 2012-03-31
- Season 0 2012-03-23
Episode
- Episode 1: A Big Brother Should Always...
- Episode 2: Stand on the Moon Together Alive
- Episode 3: Do I Have Good Luck?
- Episode 4: Distant Goal
- Episode 5: Promise to Drink
- Episode 6: An Engineer's Switch
- Episode 7: Earnest Failure
- Episode 8: Promise Sign
- Episode 9: Sea Diver and Space Diver
- Episode 10: Those Who Wait for Hibito
- Episode 11: Those Who Dream Far
- Episode 12: Young Excitement
- Episode 13: Piece of Cake
- Episode 14: Wheelchair Pilot
- Episode 15: Two Notebooks
- Episode 16: Deneil-ized!
- Episode 17: Two Keyboards
- Episode 18: Next to Hibito
- Episode 19: Determination to Give Up
- Episode 20: Rehearsal
- Episode 21: Hibito's Disorder
- Episode 22: A Road on the Roadless Moon
- Episode 23: Magic Trick
- Episode 24: My Hands
- Episode 25: Olga
- Episode 26: An Astronaut's Daughter
- Episode 27: Out of Time
- Episode 28: Olga, Hibito and Gagarin
- Episode 29: Secret
- Episode 30: Worst Enemy
- Episode 31: Space Family
- Episode 32: Kenji and I
- Episode 33: Supandaman
- Episode 34: On the Moon's Surface
- Episode 35: For Tomorrow
- Episode 36: To the Place Where I Belong
- Episode 37: Pretty Dog
- Episode 38: Last Words
- Episode 39: A Small Note and a Big Lucky Charm
- Episode 40: How to Help Hibito
- Episode 41: Lonely People
- Episode 42: In the Corner of My Heart
- Episode 43: Exciting Teamwork
- Episode 44: Our History
- Episode 45: Astronaut and Father
- Episode 46: Won't Go Away
- Episode 47: The Ultimate Astronaut
- Episode 48: Life Changes, Promises Don't
Space Brothers Season 2 The Ultimate Astronaut
When they were young, the brothers Mutta and Hibito promised each other they would become astronauts. Now, in 2025, Hibito has followed his dream to become the first Japanese on the moon, but Mutta has just been fired from his job. His brother reminds him of their childhood promise, and Mutta decides once again to aim for space.
