NOVA Season 23 Episode 15 Synopsis

Carl Sagan and other scientists investigate claims that people have been visited or abducted by aliens.

NOVA Season 23 Episodes...

• s23e01 - Anastasia Dead or Alive?
• s23e02 - Venus Unveiled
• s23e03 - Hawaii Born of Fire
• s23e04 - The Doomsday Asteroid
• s23e05 - Lightning!
• s23e06 - Hunt for the Serial Arsonist
• s23e07 - Treasures of the Great Barrier Reef
• s23e08 - Race to Catch a Buckyball
• s23e09 - Can Buildings Make You Sick?
• s23e10 - Terror in the Mine Fields
• s23e11 - The Day the Earth Shook
• s23e12 - B-29 Frozen in Time
• s23e13 - Ebola: The Plague Fighters
• s23e14 - War Machines of Tomorrow
• s23e15 - Kidnapped by U.F.O'.s?
• s23e16 - Flood!
• s23e17 - Dr. Spock the Baby Doc
• s23e18 - Warriors of the Amazon
• s23e19 - Bombing of America

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.