Season
- Season 0 2009-03-08
- Season 1 2010-04-20
- Season 2 2010-10-28
- Season 3 2011-07-28
- Season 4 2012-02-17
- Season 5 2012-12-21
- Season 6 2013-09-30
- Season 7 2014-01-24
- Season 8 2014-06-13
- Season 9 2014-10-31
- Season 10 2015-07-24
- Season 11 2016-05-06
- Season 12 2017-04-28
- Season 13 2018-04-27
- Season 14 2019-05-31
- Season 15 2020-01-25
- Season 16 2020-11-13
- Season 17 2021-08-06
- Season 18 2022-01-07
- Season 19 2023-01-06
- Season 20 2024-01-05
- Season 21 2025-02-07
Season 21 Episode
- Season 19 The Hotspot Connection
- Season 19 The Crop Circle Code
- Season 19 Mystery of the Lost Civilization
- Season 19 The Power of the Obelisks
- Season 19 The MUFON Files
- Season 19 Cosmic Impacts
- Season 19 Close Encounters of the Fifth Kind
- Season 19 The Mysteries of Alaska
- Season 19 Aliens in our Airspace
- Season 19 The Giants of Malta
- Season 19 The Top Ten Pyramid Sites
- Season 19 The Top Ten Mysterious Devices
- Season 19 The Top Ten Mysterious Islands
- Season 19 The Top Ten Alien Craft
- Season 19 Edgar Cayce: The Sleeping Prophet
- Season 19 The Gods of Greece
- Season 19 The New UFO Hunters
- Season 19 Power of the Talisman
- Season 19 The Top Ten Mysteries of the Deep
- Season 19 The Top Ten Alien Petroglyphs
Ancient Aliens - Season 19 Episode 6 Cosmic Impacts
7.00 42 minutes Meteor impacts have significantly altered our world, creating the perfect environment for the rise of humankind and delivering metals essential to the development of an advanced civilization. But could new evidence reveal that celestial objects have been directed to Earth by an alien intelligence?
