Ancient Aliens explores the controversial theory that extraterrestrials have visited Earth for millions of years. From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode in this hit History series gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate. Did intelligent beings from outer space visit Earth thousands of years ago?
| # | Title | Airdate |
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| 1 | Apr 21, 2010 | |
| 2 | Apr 28, 2010 | |
| 3 | May 5, 2010 | |
| 4 | May 19, 2010 | |
| 5 | May 26, 2010 | |
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Mar 9, 2009 |
| # | Title | Airdate |
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| 1 | Oct 29, 2010 | |
| 2 | Nov 5, 2010 | |
| 3 | Nov 12, 2010 | |
| 4 | Nov 19, 2010 | |
| 5 | Nov 26, 2010 | |
| 6 | Dec 3, 2010 | |
| 7 | Dec 10, 2010 | |
| 8 | Dec 17, 2010 | |
| 9 | Dec 24, 2010 | |
| 10 | Dec 31, 2010 |
| # | Title | Airdate |
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| 1 | Jul 29, 2011 | |
| 2 | Aug 5, 2011 | |
| 3 | Aug 12, 2011 | |
| 4 | Aug 19, 2011 | |
| 5 | Aug 26, 2011 | |
| 6 | Sep 2, 2011 | |
| 7 | Sep 9, 2011 | |
| 8 | Sep 16, 2011 | |
| 9 | Sep 23, 2011 | |
| 10 | Sep 29, 2011 | |
| 11 | Oct 6, 2011 | |
| 12 | Oct 13, 2011 | |
| 13 | Oct 20, 2011 | |
| 14 | Oct 27, 2011 | |
| 15 | Nov 17, 2011 | |
| 16 | Nov 24, 2011 |
| # | Title | Airdate |
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| 1 | Feb 17, 2012 | |
| 2 | Feb 17, 2012 | |
| 3 | Feb 24, 2012 | |
| 4 | Mar 2, 2012 | |
| 5 | Mar 10, 2012 | |
| 6 | Mar 16, 2012 | |
| 7 | Mar 24, 2012 | |
| 8 | Apr 6, 2012 | |
| 9 | Apr 27, 2012 | |
| 10 | May 4, 2012 |
| # | Title | Airdate |
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| 1 | Dec 21, 2012 | |
| 2 | Dec 28, 2012 | |
| 3 | Jan 4, 2013 | |
| 4 | Jan 11, 2013 | |
| 5 | Jan 18, 2013 | |
| 6 | Jan 25, 2013 | |
| 7 | Feb 8, 2013 | |
| 8 | Feb 15, 2013 | |
| 9 | Feb 22, 2013 | |
| 10 | Apr 5, 2013 | |
| 11 | Apr 12, 2013 | |
| 12 | Apr 19, 2013 |
| # | Title | Airdate |
|---|---|---|
| 1 | Oct 1, 2013 | |
| 2 | Oct 8, 2013 | |
| 3 | Oct 15, 2013 | |
| 4 | Oct 22, 2013 | |
| 5 | Oct 29, 2013 | |
| 6 | Nov 2, 2013 | |
| 7 | Nov 9, 2013 | |
| 8 | Nov 16, 2013 | |
| 9 | Nov 30, 2013 | |
| 10 | Dec 7, 2013 | |
| 11 | Dec 14, 2013 |
| # | Title | Airdate |
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| 1 | Jan 25, 2014 | |
| 2 | Feb 1, 2014 | |
| 3 | Feb 8, 2014 | |
| 4 | Feb 15, 2014 | |
| 5 | Feb 22, 2014 | |
| 6 | Mar 1, 2014 | |
| 7 | Mar 8, 2014 | |
| 8 | Mar 15, 2014 |
| # | Title | Airdate |
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| 1 | Jun 14, 2014 | |
| 2 | Jun 21, 2014 | |
| 3 | Jun 28, 2014 | |
| 4 | Jul 26, 2014 | |
| 5 | Jul 26, 2014 | |
| 6 | Aug 2, 2014 | |
| 7 | Aug 9, 2014 | |
| 8 | Aug 16, 2014 | |
| 9 | Aug 23, 2014 |
| # | Title | Airdate |
|---|---|---|
| 1 | Nov 1, 2014 | |
| 2 | Nov 8, 2014 | |
| 3 | Nov 15, 2014 | |
| 4 | Nov 22, 2014 | |
| 5 | Nov 29, 2014 | |
| 6 | Dec 6, 2014 | |
| 7 | Dec 20, 2014 | |
| 8 | Dec 24, 2014 | |
| 9 | Apr 11, 2015 | |
| 10 | Apr 18, 2015 | |
| 11 | Apr 25, 2015 | |
| 12 | May 2, 2015 | |
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May 16, 2015 | |
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May 23, 2015 | |
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May 30, 2015 | |
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Jun 6, 2015 | |
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Jun 13, 2015 | |
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Jun 20, 2015 | |
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Jun 27, 2015 |
| # | Title | Airdate |
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| 1 | Jul 24, 2015 | |
| 2 | Jul 31, 2015 | |
| 3 | Aug 7, 2015 | |
| 4 | Aug 14, 2015 | |
| 5 | Aug 21, 2015 | |
| 6 | Aug 28, 2015 | |
| 7 | Sep 4, 2015 | |
| 8 | Sep 18, 2015 | |
| 9 | Oct 2, 2015 | |
| 10 | Oct 9, 2015 | |
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Jul 25, 2015 |
| # | Title | Airdate |
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| 1 | May 7, 2016 | |
| 2 | May 14, 2016 | |
| 3 | May 21, 2016 | |
| 4 | May 28, 2016 | |
| 5 | Jun 11, 2016 | |
| 6 | Jun 18, 2016 | |
| 7 | Jun 25, 2016 | |
| 8 | Jul 9, 2016 | |
| 9 | Jul 16, 2016 | |
| 10 | Jul 23, 2016 | |
| 11 | Jul 30, 2016 | |
| 12 | Aug 13, 2016 | |
| 13 | Aug 20, 2016 | |
| 14 | Aug 27, 2016 | |
| 15 | Sep 3, 2016 |
| # | Title | Airdate |
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| 1 | Apr 29, 2017 | |
| 2 | May 6, 2017 | |
| 3 | May 13, 2017 | |
| 4 | May 20, 2017 | |
| 5 | May 27, 2017 | |
| 6 | Jun 3, 2017 | |
| 7 | Jun 10, 2017 | |
| 8 | Jun 17, 2017 | |
| 9 | Jul 8, 2017 | |
| 10 | Jul 15, 2017 | |
| 11 | Jul 22, 2017 | |
| 12 | Jul 29, 2017 | |
| 13 | Aug 5, 2017 | |
| 14 | Aug 12, 2017 | |
| 15 | Sep 9, 2017 | |
| 16 | Sep 16, 2017 |
| # | Title | Airdate |
|---|---|---|
| 1 | Apr 28, 2018 | |
| 2 | May 5, 2018 | |
| 3 | May 12, 2018 | |
| 4 | May 19, 2018 | |
| 5 | May 26, 2018 | |
| 6 | Jun 2, 2018 | |
| 7 | Jul 21, 2018 | |
| 8 | Jul 28, 2018 | |
| 9 | Aug 4, 2018 | |
| 10 | Aug 11, 2018 | |
| 11 | Aug 18, 2018 | |
| 12 | Aug 25, 2018 | |
| 13 | Sep 1, 2018 | |
| 14 | Jan 5, 2019 | |
| 15 | Jan 8, 2019 |
| # | Title | Airdate |
|---|---|---|
| 1 | Jun 1, 2019 | |
| 2 | Jun 8, 2019 | |
| 3 | Jun 15, 2019 | |
| 4 | Jun 22, 2019 | |
| 5 | Jun 29, 2019 | |
| 6 | Jul 6, 2019 | |
| 7 | Jul 20, 2019 | |
| 8 | Jul 27, 2019 | |
| 9 | Aug 3, 2019 | |
| 10 | Aug 10, 2019 | |
| 11 | Aug 17, 2019 | |
| 12 | Aug 24, 2019 | |
| 13 | Aug 31, 2019 | |
| 14 | Sep 7, 2019 | |
| 15 | Oct 5, 2019 | |
| 16 | Oct 12, 2019 | |
| 17 | Oct 19, 2019 | |
| 18 | Nov 2, 2019 | |
| 19 | Nov 9, 2019 | |
| 20 | Nov 16, 2019 | |
| 21 | Nov 23, 2019 | |
| 22 | Nov 30, 2019 |
| # | Title | Airdate |
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| 1 | Jan 26, 2020 | |
| 2 | Feb 2, 2020 | |
| 3 | Feb 9, 2020 | |
| 4 | Feb 16, 2020 | |
| 5 | Feb 23, 2020 | |
| 6 | Mar 1, 2020 | |
| 7 | Mar 8, 2020 | |
| 8 | Mar 15, 2020 | |
| 9 | Mar 22, 2020 | |
| 10 | Mar 29, 2020 | |
| 11 | Apr 12, 2020 | |
| 12 | Apr 19, 2020 |
| # | Title | Airdate |
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| 1 | Nov 14, 2020 | |
| 2 | Nov 21, 2020 | |
| 3 | Dec 5, 2020 | |
| 4 | Dec 12, 2020 | |
| 5 | Dec 19, 2020 | |
| 6 | Feb 13, 2021 | |
| 7 | Feb 20, 2021 | |
| 8 | Feb 27, 2021 | |
| 9 | Mar 6, 2021 | |
| 10 | Mar 13, 2021 |
| # | Title | Airdate |
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| 1 | Aug 7, 2021 | |
| 2 | Aug 14, 2021 | |
| 3 | Aug 21, 2021 | |
| 4 | Sep 18, 2021 | |
| 5 | Sep 25, 2021 | |
| 6 | Oct 2, 2021 | |
| 7 | Oct 9, 2021 |
| # | Title | Airdate |
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| 1 | Jan 8, 2022 | |
| 2 | Jan 15, 2022 | |
| 3 | Jan 22, 2022 | |
| 4 | Jan 29, 2022 | |
| 5 | Feb 12, 2022 | |
| 6 | Feb 19, 2022 | |
| 7 | Feb 26, 2022 | |
| 8 | Mar 5, 2022 | |
| 9 | Mar 12, 2022 | |
| 10 | Mar 19, 2022 | |
| 11 | Jul 9, 2022 | |
| 12 | Jul 16, 2022 | |
| 13 | Jul 23, 2022 | |
| 14 | Jul 30, 2022 | |
| 15 | Aug 6, 2022 | |
| 16 | Aug 13, 2022 | |
| 17 | Aug 20, 2022 | |
| 18 | Aug 27, 2022 | |
| 19 | Sep 10, 2022 | |
| 20 | Sep 17, 2022 |
| # | Title | Airdate |
|---|---|---|
| 1 | Jan 7, 2023 | |
| 2 | Jan 14, 2023 | |
| 3 | Jan 21, 2023 | |
| 4 | Feb 4, 2023 | |
| 5 | Feb 11, 2023 | |
| 6 | Feb 18, 2023 | |
| 7 | Feb 25, 2023 | |
| 8 | Mar 4, 2023 | |
| 9 | Mar 11, 2023 | |
| 10 | Mar 18, 2023 | |
| 11 | Jul 1, 2023 | |
| 12 | Jul 8, 2023 | |
| 13 | Jul 15, 2023 | |
| 14 | Jul 22, 2023 | |
| 15 | Aug 5, 2023 | |
| 16 | Aug 12, 2023 | |
| 17 | Aug 19, 2023 | |
| 18 | Aug 26, 2023 | |
| 19 | Sep 9, 2023 | |
| 20 | Sep 16, 2023 |
| # | Title | Airdate |
|---|---|---|
| 1 | Jan 6, 2024 | |
| 2 | Jan 13, 2024 | |
| 3 | Jan 20, 2024 | |
| 4 | Feb 3, 2024 | |
| 5 | Feb 10, 2024 | |
| 6 | Feb 17, 2024 | |
| 7 | Feb 24, 2024 | |
| 8 | Mar 2, 2024 | |
| 9 | Mar 9, 2024 | |
| 10 | Mar 16, 2024 | |
| 11 | Jun 29, 2024 | |
| 12 | Jul 6, 2024 | |
| 13 | Jul 13, 2024 | |
| 14 | Jul 20, 2024 | |
| 15 | Aug 10, 2024 | |
| 16 | Aug 17, 2024 | |
| 17 | Aug 24, 2024 | |
| 18 | Aug 31, 2024 | |
| 19 | Sep 7, 2024 | |
| 20 | Sep 14, 2024 |
| # | Title | Airdate |
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| 1 | Feb 8, 2025 | |
| 2 | Feb 15, 2025 | |
| 3 | Feb 22, 2025 | |
| 4 | Mar 1, 2025 | |
| 5 | Mar 8, 2025 | |
| 6 | Mar 15, 2025 | |
| 7 | Mar 22, 2025 | |
| 8 | Mar 29, 2025 | |
| 9 | Aug 30, 2025 | |
| 10 | Sep 6, 2025 | |
| 11 | Sep 13, 2025 | |
| 12 | Sep 20, 2025 | |
| 13 | Oct 3, 2025 | |
| 14 | Oct 10, 2025 | |
| 15 | Oct 17, 2025 | |
| 16 | Oct 24, 2025 | |
| 17 | Nov 7, 2025 |
| # | Title | Airdate |
|---|---|---|
| 1 | Jan 16, 2026 | |
| 2 | Jan 23, 2026 | |
| 3 | Jan 30, 2026 | |
| 4 | Feb 6, 2026 | |
| 5 | Feb 27, 2026 | |
| 6 | Mar 6, 2026 | |
| 7 | Jun 12, 2026 | |
| 8 | Jun 19, 2026 | |
| 9 | Jun 26, 2026 | |
| 10 | Jul 3, 2026 | |
| 11 | Jul 10, 2026 | |
| 12 | Jul 17, 2026 | |
| 13 | Jul 24, 2026 | |
| 14 | Jul 31, 2026 |