| Type | Exogalactic beings • extraterrestrial life |
| First contact | 20th century (alternate timeline) |
| Place of origin | Exogalactic civilizations |
| Notable discoveries | Advanced technology • cultural exchange • Evolution of human understanding of the universe |
| Encountered civilizations | Valtherians • Zenorians • Tau Cetians |
| Impact on human civilization | Profound technological advancements • Cultural exchange and development • Revolutionized understanding of universe |
