Interpretations of extraterrestrial life in the 21st century have expanded beyond traditional depictions like green Martians and Grays to include the concept of sentient beings that visit Earth to share knowledge.

Authors

• Person: Not available Organization: PBS
  Alien Abduction and UFOs: Why Are Grays So Common? | Season 4

Sources

• Alien Abduction and UFOs: Why Are Grays So Common? | Season 4 www.pbs.org PBS via serper

Referenced by nodes (2)

• Grey Aliens concept
• extraterrestrial life concept