Ancient Aliens (2009)

Documentary · History

Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

IMDb rating: 7.0 (13,577 votes)
Seasons: 22
Streaming (US): Netflix · Amazon Prime Video · Hulu · Philo · Pure Flix · HISTORY Vault Apple TV Channel · HISTORY Vault Amazon Channel · History · The Roku Channel · Pluto TV · Tubi TV · Hoopla · Spectrum On Demand
Language: EN
Type: TV series

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Ratings refreshed Jul 3, 2026 · 22 seasons indexed

Cast

Seasons

Season 1 (2009)

7.43 avg 6 episodes 7.6 → 7.4 94 min avg

Season 1 episodes — IMDb ratings
#	Title	Rating	Votes
0	Chariots, Gods and Beyond	7.6	734
1	The Evidence	7.5	367
2	The Visitors	7.4	307
3	The Mission	7.3	284
4	Closer Encounters	7.4	283
5	The Return	7.4	262

Season 2 (2010)

7.26 avg 10 episodes 7.3 → 7.1 44 min avg

Season 2 episodes — IMDb ratings
#	Title	Rating	Votes
1	Mysterious Places	7.3	293
2	Gods and Aliens	7.2	273
3	Underwater Worlds	7.6	265
4	Underground Aliens	7.3	262
5	Aliens and the Third Reich	7.4	275
6	Alien Tech	7.2	236
7	Angels and Aliens	6.9	241
8	Unexplained Structures	7.5	248
9	Alien Devastations	7.1	221
10	Alien Contacts	7.1	227

Season 3 (2011)

6.85 avg 16 episodes 7.0 → 7.0 45 min avg

Season 3 episodes — IMDb ratings
#	Title	Rating	Votes
1	Aliens and the Old West	7.0	228
2	Aliens and Monsters	6.9	213
3	Aliens and Sacred Places	6.9	203
4	Aliens and Temples of Gold	7.2	194
5	Aliens and Mysterious Rituals	6.8	189
6	Aliens and Ancient Engineers	7.7	208
7	Aliens, Plagues and Epidemics	7.0	196
8	Aliens and Lost Worlds	7.2	194
9	Aliens and Deadly Weapons	6.7	188
10	Aliens and Evil Places	7.3	195
11	Aliens and the Founding Fathers	6.3	197
12	Aliens and Deadly Cults	6.2	185
13	Aliens and the Secret Code	6.8	180
14	Aliens and the Undead	5.9	182
15	Aliens, Gods and Heroes	6.7	168
16	Aliens and the Creation of Man	7.0	188

Season 4 (2012)

7.08 avg 10 episodes 7.3 → 6.5 45 min avg

Rollercoaster

Season 4 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Mayan Conspiracy	7.3	205
2	The Doomsday Prophecies	7.2	179
3	The Greys	7.1	178
4	Aliens and Mega-Disasters	6.7	168
5	The NASA Connection	7.6	178
6	Mystery of Puma Punku	7.8	207
7	Aliens and Bigfoot	6.2	174
8	The Da Vinci Conspiracy	7.3	191
9	The Time Travelers	7.1	169
10	Aliens and Dinosaurs	6.5	172

Season 5 (2012)

6.84 avg 12 episodes 7.1 → 7.0 44 min avg

Season 5 episodes — IMDb ratings
#	Title	Rating	Votes
1	Secrets of the Pyramids	7.1	188
2	Aliens and Cover-Ups	6.8	163
3	Alien Power Plants	6.9	159
4	Destination Orion	6.8	156
5	The Einstein Factor	6.6	162
6	Secrets of the Tombs	6.7	108
7	Prophets and Prophecies	6.6	152
8	Beyond Nazca	6.7	156
9	Strange Abductions	6.8	147
10	The Von Däniken Legacy	7.2	153
11	The Viking Gods	6.9	150
12	The Monoliths	7.0	146

Season 6 (2013)

6.63 avg 11 episodes 6.7 → 6.7 44 min avg

Season 6 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Power of Three	6.7	157
2	The Crystal Skulls	6.2	160
3	The Anunnaki Connection	7.3	163
4	Magic of the Gods	6.5	138
5	The Satan Conspiracy	6.2	145
6	Alien Operations	6.5	133
7	Emperors, Kings and Pharaohs	6.4	134
8	Mysterious Relics	6.5	125
9	Aliens and Forbidden Islands	7.0	135
10	Aliens and the Lost Ark	6.9	139
11	Aliens and Mysterious Mountains	6.7	134

Season 7 (2014)

6.71 avg 8 episodes 6.9 → 6.8 45 min avg

Season 7 episodes — IMDb ratings
#	Title	Rating	Votes
1	Aliens and Stargates	6.9	126
2	Aliens in America	6.7	126
3	The Star Children	6.3	132
4	Treasures of the Gods	6.8	124
5	Aliens and the Red Planet	7.1	127
6	The Shamans	6.4	120
7	Aliens and Insects	6.7	119
8	Alien Breeders	6.8	120

Season 8 (2014)

6.83 avg 9 episodes 6.8 → 6.4 43 min avg

Season 8 episodes — IMDb ratings
#	Title	Rating	Votes
1	Alien Transports	6.8	118
2	Mysterious Structures	7.1	122
3	Mysterious Devices	6.8	112
4	Faces of the Gods	6.3	110
5	The Reptilians	6.6	139
6	The Tesla Experiment	7.7	164
7	The God Particle	6.8	133
8	Alien Encounters	7.0	115
9	Aliens and Superheroes	6.4	130

Season 9 (2014)

7.07 avg 12 episodes 7.2 → 7.4 43 min avg

Rebound

Season 9 episodes — IMDb ratings
#	Title	Rating	Votes
1	Forbidden Caves	7.2	119
2	Mysteries of the Sphinx	7.4	131
3	Aliens Among Us	6.8	121
4	The Genius Factor	7.0	122
5	Secrets of the Mummies	6.8	117
6	Alien Resurrections	6.9	108
7	Alien Messages	7.1	119
8	The Great Flood	7.3	119
9	Aliens and the Civil War	6.3	114
10	Hidden Pyramids	7.3	111
11	The Vanishings	7.3	118
12	The Alien Agenda	7.4	115

Season 10 (2015)

7.10 avg 10 episodes 7.4 → 6.7 43 min avg

Season 10 episodes — IMDb ratings
#	Title	Rating	Votes
1	Aliens B.C.	7.4	136
2	NASA's Secret Agenda	7.4	131
3	Aliens and Robots	7.0	125
4	Dark Forces	6.8	122
5	The Alien Evolution	7.0	120
6	The Other Earth	7.4	120
7	Creatures of the Deep	6.6	120
8	Circles from the Sky	7.6	131
9	The Alien Wars	7.1	120
10	The Forbidden Zones	6.7	93

Season 11 (2016)

7.45 avg 15 episodes 7.9 → 7.5 43 min avg

Season 11 episodes — IMDb ratings
#	Title	Rating	Votes
1	Pyramids of Antarctica	7.9	151
2	Destination Mars	7.9	137
3	The Next Humans	7.4	116
4	The New Evidence	7.6	113
5	The Visionaries	7.1	114
6	Decoding the Cosmic Egg	7.0	107
7	The Wisdom Keepers	7.5	110
8	The Mysterious Nine	7.4	118
9	The Hidden Empire	7.2	102
10	The Prototypes	7.2	110
11	Space Station Moon	7.9	143
12	Russia's Secret Files	7.4	117
13	Beyond Roswell	7.2	108
14	The Returned	7.5	120
15	Shiva the Destroyer	7.5	128

Season 12 (2017)

7.37 avg 16 episodes 7.3 → 7.5 42 min avg

Rebound

Season 12 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Alien Hunters	7.3	92
2	Forged by the Gods	7.5	120
3	The Mystery of Rudloe Manor	7.3	123
4	The Alien Architects	8.0	122
5	The Pharaohs' Curse	7.3	116
6	The Science Wars	7.8	118
7	City of the Gods	7.7	117
8	The Alien Frequency	7.5	114
9	The Majestic Twelve	7.8	127
10	The Akashic Record	7.3	108
11	Voices of the Gods	7.2	98
12	The Animal Agenda	6.7	92
13	The Replicants	7.0	100
14	A Spaceship Made of Stone	7.0	104
15	The Alien Disks	7.0	98
16	Return to Gobekli Tepe	7.5	108

Season 13 (2018)

7.26 avg 15 episodes 7.6 → 7.0 56 min avg

Season 13 episodes — IMDb ratings
#	Title	Rating	Votes
1	The UFO Conspiracy	7.6	139
2	Da Vinci's Forbidden Codes	7.2	119
3	The Alien Protocols	7.2	103
4	Earth's Black Holes	7.4	106
5	The Desert Codes	7.4	91
6	Area 52	7.3	99
7	Earth Station Egypt	7.6	108
8	Island of the Giants	7.2	97
9	The Taken	7.3	88
10	The Sentinels	7.3	96
11	Russia Declassified	7.2	96
12	They Came from the Sky	7.0	92
13	The Artificial Human	6.8	88
14	The Alien Phenomenon	7.4	92
15	Return to Mars	7.0	86

Season 14 (2019)

7.11 avg 22 episodes 7.9 → 7.3 42 min avg

Rollercoaster

Season 14 episodes — IMDb ratings
#	Title	Rating	Votes
1	Return to Antarctica	7.9	131
2	The Badlands Guardian	6.5	111
3	Element 115	7.7	138
4	The Star Gods of Sirius	7.3	104
5	They Came from the Sea	7.7	104
6	Secrets of the Maya	7.6	130
7	The Druid Connection	7.0	99
8	The Reptilian Agenda	7.1	100
9	The Alien Infection	7.3	99
10	Project Hybrid	6.9	89
11	The Trans-Dimensionals	6.9	90
12	Islands of Fire	7.8	106
13	The Constellation Code	6.3	87
14	The Nuclear Agenda	7.2	89
15	The Alien Mountain	6.7	91
16	The Alien Brain	6.8	96
17	The Secrets of Stonehenge	6.9	92
18	Food of the Gods	6.5	83
19	Human Hieroglyphs	6.6	81
20	The Storming of Area 51	7.3	96
21	Countdown to Disclosure	7.2	84
22	Secrets of the Exoplanets	7.3	80

Season 15 (2020)

7.20 avg 12 episodes 7.9 → 7.1 42 min avg

Rollercoaster

Season 15 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Mystery of Nan Madol	7.9	142
2	The Relics of Roswell	7.0	98
3	Destination Chile	7.7	101
4	The Real Men in Black	6.8	73
5	The Mystery of the Stone Giants	7.1	87
6	The World Before Time	7.8	100
7	They Came from The Pleiades	7.1	87
8	The Immortality Machine	6.8	83
9	The Shapeshifters	6.6	67
10	The Mystery of Skinwalker Ranch	7.3	93
11	The Ultimate Guide to UFOs	7.2	86
12	Aliens and the Presidents	7.1	90

Season 16 (2020)

7.59 avg 11 episodes 7.4 → 8.1 46 min avg

Season 16 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Divine Number	7.4	95
2	The Lost Kingdom	7.5	89
3	The Galactic Keyhole	7.4	88
4	Giants of the Mediterranean	7.4	83
5	The Forbidden Bible	7.8	83
6	William Shatner Meets Ancient Aliens	8.0	128
7	Impossible Artifacts	8.0	98
8	The Space Travelers	6.9	71
9	The UFO Pioneers	7.3	68
10	The Harmonic Code	7.7	79
14	The Alien Shape	8.1	11

Season 17 (2021)

7.13 avg 7 episodes 7.3 → 7.2 41 min avg

Season 17 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Lost City of Peru	7.3	79
2	Top Ten Mysterious Sites	7.2	78
3	Top Ten Alien Cover-Ups	6.8	68
4	The Mystery of Mount Shasta	7.0	68
5	The Human Experiment	7.3	64
6	Top Ten Alien Encounters	7.1	58
7	Top Ten Alien Artifacts	7.2	63

Season 18 (2022)

7.06 avg 20 episodes 7.5 → 8.1 42 min avg

Season 18 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Disclosure Event	7.5	99
2	Mystery of the Standing Stones	7.1	78
3	Beneath the Sacred Temples	7.3	81
4	The World on Alert	7.3	81
5	Recovering The Ark Of The Covenant	7.0	76
6	Secrets Of The Star Ancestors	7.3	71
7	Alien Air Force	7.1	70
8	The Shadow People	6.8	69
9	Decoding the Dragon Gods	6.9	69
10	The Time Benders	7.4	72
11	Incredible Structures	6.9	62
12	Extraordinary Encounters	6.4	58
13	Decoding the Alien Glyphs	6.4	60
14	The UFO Investigations	6.7	55
15	Mysterious Artifacts	6.6	56
16	Evidence of Alien Life	6.8	56
17	The Shining Ones	7.0	65
18	The Journey to Immortality	7.5	65
19	Secrets of Inner Earth	7.0	63
20	Return of the Egyptian Gods	8.1	74

Season 19 (2023)

7.74 avg 20 episodes 7.6 → 7.6 42 min avg

Season 19 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Hotspot Connection	7.6	74
2	The Crop Circle Code	7.8	76
3	Mystery of the Lost Civilization	8.1	80
4	The Power of the Obelisks	7.8	72
5	The MUFON Files	7.2	77
6	Cosmic Impacts	7.4	66
7	Close Encounters of the Fifth Kind	7.8	72
8	The Mysteries of Alaska	7.5	70
9	Aliens in our Airspace	8.0	69
10	The Giants of Malta	7.9	73
11	The Top Ten Pyramid Sites	8.0	70
12	The Top Ten Mysterious Devices	7.5	62
13	The Top Ten Mysterious Islands	7.6	56
14	The Top Ten Alien Craft	7.7	54
15	Edgar Cayce: The Sleeping Prophet	8.0	64
16	The Gods of Greece	7.9	61
17	The New UFO Hunters	7.9	53
18	Power of the Talisman	7.6	53
19	The Top Ten Mysteries of the Deep	7.8	50
20	The Top Ten Alien Petroglyphs	7.6	47

Season 20 (2024)

7.81 avg 20 episodes 7.3 → 8.7 42 min avg

Season 20 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Top Ten Alien Influencers	7.3	58
2	The Top Ten Extraordinary Creatures	6.5	49
3	The Top Ten Hidden Alien Bases	7.4	60
4	The Top Ten Scariest Encounters	7.4	44
5	The Top Ten Alien Codes	7.4	54
6	The Top Ten Alien Disasters	7.1	50
7	Secrets of the Sumerians	8.1	59
8	The UFO Superhighway	7.6	51
9	Mysteries of Scotland	7.8	51
10	Mystery of the Stone Spheres	7.9	50
11	Mysteries of the Maya	8.6	47
12	Unlocking the Stargates	7.8	48
13	The Whistleblowers	7.8	46
14	The Search for Extraterrestrial Intelligence	8.1	43
15	Jacques Vallée: UFO Pioneer	8.1	49
16	The Teachers	7.9	44
17	Egypt's Giant Tombs	8.4	39
18	The Linda Moulton Howe Files	8.4	46
19	The Chosen	7.8	39
20	Resurrecting Puma Punku	8.7	41

Season 21 (2025)

7.78 avg 17 episodes 7.1 → 8.1 42 min avg

Slow burn

Season 21 episodes — IMDb ratings
#	Title	Rating	Votes
1	The Top Ten Extraordinary Discoveries	7.1	34
2	The Top Ten Mysterious Monoliths	7.1	31
3	The Top Ten UFO Crashes	7.3	32
4	The Top Ten Unexplained Technologies	7.4	31
5	The Top Ten Secret Projects	7.0	31
6	The Top Ten Mysterious Mountains	7.1	33
7	Mysteries of the Aztecs	8.4	33
8	The Glowing Orb Phenomenon	7.7	29
9	The Legacy of J. Allen Hynek	8.0	34
10	The Volcano Factor	8.4	32
11	The Birdman Mystery	7.9	30
12	The Abduction Files	8.2	27
13	The Giants	8.1	25
14	Aliens in Our Midst	7.8	22
15	Britain's UFO Files	8.4	22
16	Mysteries of the Norse Gods	8.3	21
17	Secrets of Japan	8.1	22

Season 22 (2026)

7.80 avg 8 episodes 7.7 → 7.3 42 min avg

Season 22 episodes — IMDb ratings
#	Title	Rating	Votes
1	Skulls of the Gods	7.7	26
2	Egypt's Lost Pyramid	8.2	23
3	Islands of the Gods	8.1	17
4	Extraterrestrial Engineering	8.2	15
5	UFO Hot Spots	7.8	16
6	Mysterious Monuments	7.1	15
7	Underwater Alien Bases	8.0	10
8	Secrets of the Vedas	7.3	8

Ancient Aliens (2009)

Cast

Seasons

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