Americans Are Increasingly Convinced That Aliens Have Visited Earth

Americans are becoming more open to the idea that aliens have visited Earth, according to a series of polls that show belief in alien visitation has been steadily on the rise since 2012.

Almost half—47 percent—of Americans say they think aliens have definitely or probably visited Earth at some point in time, according to a new poll from YouGov conducted in November 2025 that involved 1,114 adult participants. That percentage is up from roughly a third (36 percent) of Americans polled in 2012 by Kelton Research, with the exact same sample size. Gallup published polls on this question in 2019 and 2021 that likewise show an upward trend.

Moreover, people seem to be getting off the fence on this issue, one way or the other. Just 16 percent of Americans said they were unsure if aliens had visited Earth in the new poll, down from 48 percent who were unsure in 2012. Meanwhile, even as belief in alien visitation has risen, so has doubt: The new poll shows that 37 percent of Americans said Earth likely hasn’t been visited by aliens, more than double the 17 percent logged in 2012.

It’s impossible to know exactly why Americans have become more receptive to alien visitation from these polls alone; they only include raw statistics, and lack granular details about the specific motivations for the participants’ responses.

“It’s important to note that this is a poll about belief,” says Susan Lepselter, an author and associate professor of anthropology and American Studies at Indiana University who has written extensively on alien beliefs and UFO experiences. “It’s not a poll about experience, contact, feelings—nothing like that.”

“We don’t know what their engagement is; we don’t know if their belief has been life-changing,” she adds. “We just know one thing, which is that the statistics have moved from one set of beliefs to another.”

Of course, it’s still possible—and let’s be real, fun—to speculate on the drivers of the trend. One obvious culprit is a new posture from institutional news sources, such as the US government and legacy media, which have finally started taking unidentified anomalous phenomena (UAP) seriously.

This shift began with the release of mysterious Pentagon UAP videos by The New York Times in 2017, and has since been accelerated by spate of Congressional hearings, and a NASA independent study on UAP. The newly released documentary The Age of Disclosure, which features claims by former military officials that the US government has covered up evidence of aliens visiting Earth, has supercharged the legitimacy to this once marginalized topic.