Episode 1
Alien Theory - S21 - Episode 1 : Les dix découvertes les plus extraordinaires
7 Feb 2025
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Alien Theory - S21
Episode 2
Alien Theory - S21 - Episode 2 : Les dix monolithes les plus mystérieux
14 Feb 2025
Episode 3
Alien Theory - S21 - Episode 3 : Les dix principaux crashs d'OVNI
21 Feb 2025
Episode 4
Alien Theory - S21 - Episode 4 : Les dix technologies les plus inexpliquées
28 Feb 2025
Episode 5
Alien Theory - S21 - Episode 5 : Les dix projets les plus secrets
7 Mar 2025
Episode 6
Alien Theory - S21 - Episode 6 : Les dix montagnes les plus mystérieuses
14 Mar 2025
Episode 7
Alien Theory - S21 - Episode 7 : Mystères des Aztèques
21 Mar 2025
Episode 8
Alien Theory - S21 - Episode 8 : Le phénomène des orbes incandescents
28 Mar 2025
Episode 9
Alien Theory - S21 - Episode 9 : L'héritage de J. Allen Hynek
29 Aug 2025
Episode 10
Alien Theory - S21 - Episode 10 : Le facteur volcanique
5 Sep 2025
Episode 11
Alien Theory - S21 - Episode 11 : Le mystère de l'homme-oiseau
12 Sep 2025
Episode 12
Alien Theory - S21 - Episode 12 : Les dossiers des enlèvements
19 Sep 2025
Episode 13
Alien Theory - S21 - Episode 13 : Les Géants
2 Oct 2025
Episode 14
Alien Theory - S21 - Episode 14 : Des étrangers parmi nous
9 Oct 2025
Episode 15
Alien Theory - S21 - Episode 15 : Les dossiers britanniques sur les ovnis
16 Oct 2025
Episode 16
Alien Theory - S21 - Episode 16 : Les mystères des dieux nordiques
23 Oct 2025
Episode 17
Alien Theory - S21 - Episode 17 : Les secrets du Japon
6 Nov 2025
Episode 18
Alien Theory - S21 - Episode 18
Date to be announced
Episode 19
Alien Theory - S21 - Episode 19
Date to be announced
Episode 20
Alien Theory - S21 - Episode 20
Date to be announced
Seasons
Ancient Aliens
Saison 1
Alien Theory - S1
20 Apr 2010
Saison 2
Alien Theory - S2
28 Oct 2010
Saison 3
Alien Theory - S3
28 Jul 2011
Saison 4
Alien Theory - S4
17 Feb 2012
Saison 5
Alien Theory - S5
21 Dec 2012
Saison 6
Alien Theory - S6
30 Sep 2013
Saison 7
Alien Theory - S7
24 Jan 2014
Saison 8
Alien Theory - S8
13 Jun 2014
Saison 9
Alien Theory - S9
31 Oct 2014
Saison 10
Alien Theory - S10
24 Jul 2015
Saison 11
Alien Theory - S11
6 May 2016
Saison 12
Alien Theory - S12
28 Apr 2017
Saison 13
Alien Theory - S13
27 Apr 2018
Saison 14
Alien Theory - S14
31 May 2019
Saison 15
Alien Theory - S15
25 Jan 2020
Saison 16
Alien Theory - S16
13 Nov 2020
Saison 17
Alien Theory - S17
6 Aug 2021
Saison 18
Alien Theory - S18
7 Jan 2022
Saison 19
Alien Theory - S19
6 Jan 2023
Saison 20
Alien Theory - S20
5 Jan 2024
Saison 21
Alien Theory - S21
7 Feb 2025
Saison 22
Alien Theory - S22
15 Jan 2026
Release rhythm
Ancient Aliens
22 seasons
· Latest release 15 Jan 2026
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Sources
- [1] TMDB themoviedb.org Verified
- [2] IMDb imdb.com Verified
- [3] Alien Theory - bande annonce youtube.com Verified
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Did you know?
Frequently asked questions
When is Alien Theory - S21 available?
Alien Theory - S21 has been available since February 7, 2025.
What platforms is Alien Theory - S21 available on?
Alien Theory - S21 is available on: Amazon Video, StackTV Amazon Channel, fuboTV, Hoopla, WOW.
Where to buy Alien Theory - S21?
You can buy Alien Theory - S21 on: Amazon Video, StackTV Amazon Channel, fuboTV. View links: https://www.amazon.com/Video/
How many episodes does Alien Theory - S21 have?
Alien Theory - S21 has 22 seasons.
Who created Alien Theory - S21?
Alien Theory - S21 was created by Kevin Burns.
What is the age rating of Alien Theory - S21?
Alien Theory - S21 is rated 12.
Is Alien Theory - S21 available on Amazon Video?
Yes, Alien Theory - S21 is available on Amazon Video.
Is Alien Theory - S21 still ongoing?
Alien Theory - S21 is ongoing — 22 parts have been released so far.
What is Alien Theory - S21 about?
Alien Theory - S21 est une série de documentaire.
Is Alien Theory - S21 available in my country?
Alien Theory - S21 is available in: France, Canada, Germany, United Kingdom, Japan and 6 countries total.
Is there a sequel to Alien Theory - S21?
The next part of Alien Theory - S21 is "Alien Theory - S22" (Saison 22), scheduled for 15 January 2026.
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No.EpisodeStatusViews
1
Alien Theory - S21 - Episode 1 : Les dix découvertes les plus extraordinaires
Seen
To watch
1
2
Alien Theory - S21 - Episode 2 : Les dix monolithes les plus mystérieux
Seen
To watch
1
3
Alien Theory - S21 - Episode 3 : Les dix principaux crashs d'OVNI
Seen
To watch
1
4
Alien Theory - S21 - Episode 4 : Les dix technologies les plus inexpliquées
Seen
To watch
1
5
Alien Theory - S21 - Episode 5 : Les dix projets les plus secrets
Seen
To watch
1
6
Alien Theory - S21 - Episode 6 : Les dix montagnes les plus mystérieuses
Seen
To watch
1
7
Alien Theory - S21 - Episode 7 : Mystères des Aztèques
Seen
To watch
1
8
Alien Theory - S21 - Episode 8 : Le phénomène des orbes incandescents
Seen
To watch
1
9
Alien Theory - S21 - Episode 9 : L'héritage de J. Allen Hynek
Seen
To watch
1
10
Alien Theory - S21 - Episode 10 : Le facteur volcanique
Seen
To watch
1
11
Alien Theory - S21 - Episode 11 : Le mystère de l'homme-oiseau
Seen
To watch
1
12
Alien Theory - S21 - Episode 12 : Les dossiers des enlèvements
Seen
To watch
1
13
Alien Theory - S21 - Episode 13 : Les Géants
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1
14
Alien Theory - S21 - Episode 14 : Des étrangers parmi nous
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To watch
1
15
Alien Theory - S21 - Episode 15 : Les dossiers britanniques sur les ovnis
Seen
To watch
1
16
Alien Theory - S21 - Episode 16 : Les mystères des dieux nordiques
Seen
To watch
1
17
Alien Theory - S21 - Episode 17 : Les secrets du Japon
Seen
To watch
1
18
Alien Theory - S21 - Episode 18
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1
19
Alien Theory - S21 - Episode 19
Seen
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1
20
Alien Theory - S21 - Episode 20
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1
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