Sign In

Communications of the ACM

ACM Opinion

If There Are Aliens Out There, Where Are They?

View as: Print Mobile App Share:
Milky Way Galaxy

Credit: Khlongwangchao

Physicist Enrico Fermi famously asked the question "Where are they?" to express his surprise over the absence of any signs for the existence of other intelligent civilizations in the Milky Way Galaxy.

From Scientific American
View Full Article



No entries found

Sign In for Full Access
» Forgot Password? » Create an ACM Web Account