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U.S. ↔ extraterrestrial

Relations (1)

cross_type 2.00 — strongly supporting 3 facts

The U.S. is related to the concept of extraterrestrial through public opinion data, as evidenced by a 2005 Gallup poll indicating that 24% of people in the United States believe extraterrestrials have visited Earth, as cited in [1], [2], and [3].

Facts (3)

Sources
Alien Abduction and UFOs: Why Are Grays So Common? | Season 4 pbs.org PBS 3 facts
measurementA 2005 Gallup poll found that 24% of people in the United States believed that extraterrestrials had visited Earth.
measurementA 2005 Gallup poll found that 24% of people in the United States believed that extraterrestrials had visited Earth.
measurementA 2005 Gallup poll found that 24% of people in the United States believed that extraterrestrials had visited Earth.