Season Four of Ancient Aliens premiered on February 17, 2012.
Episodes
| # |
#
|
Title
|
|
|
Airdate
|
|
|
|
| 33 |
1
|
The Mayan Conspiracy
|
|
|
February 17, 2012
|
|
|
|
| 34 |
2
|
The Doomsday Prophecies
|
|
|
February 17, 2012
|
|
|
|
| 35 |
3
|
The Greys
|
|
|
February 24, 2012
|
|
|
|
| 36 |
4
|
Aliens and Mega-Disasters
|
|
|
March 2, 2012
|
|
|
|
| 37 |
5
|
The NASA Connection
|
|
|
March 9, 2012
|
|
|
|
| 38 |
6
|
The Mystery of Puma Punku
|
|
|
March 16, 2012
|
|
|
|
| 39 |
7
|
Aliens and Bigfoot
|
|
|
March 23, 2012
|
|
|
|
| 40 |
8
|
The Da Vinci Conspiracy
|
|
|
April 6, 2012
|
|
|
|
| 41 |
9
|
The Time Travelers
|
|
|
April 27, 2012
|
|
|
|
| 42 |
10
|
Aliens and Dinosaurs
|
|
|
May 4, 2012
|
|
|
|
