More Americans Say Aliens Have Visited Earth

An increasing number of Americans now believe that extraterrestrial beings have visited Earth, according to recent polling that suggests a significant shift in public attitudes over the past decade. Nearly half of U.S. adults—47 percent—say they think aliens have definitely or probably visited the planet, based on a November 2025 YouGov survey of 1,114 adults. That figure marks a notable rise from 2012, when a similarly sized poll found just 36 percent of Americans held that view.

The change is not limited to growing belief alone. The number of Americans who say they are unsure whether aliens have visited Earth has dropped sharply, from nearly half of respondents in 2012 to just 16 percent today. At the same time, skepticism has also increased, with 37 percent now saying aliens likely have not visited Earth, more than double the share recorded a decade earlier. Together, the data suggest Americans are increasingly forming firmer opinions on the question, even if those opinions differ.

Experts caution that polling alone cannot fully explain why these attitudes are changing. Susan Lepselter, an anthropologist who studies beliefs about aliens and unidentified flying objects, notes that the surveys measure belief rather than personal experience or emotional investment. The results indicate a shift in collective thinking, she said, but do not reveal how deeply held or consequential those beliefs may be.

Still, researchers point to several cultural and institutional developments that may be influencing public opinion. In recent years, the U.S. government and major media outlets have adopted a more serious tone when addressing unidentified anomalous phenomena, or UAPs. That shift began in 2017 with the release of Pentagon videos showing unexplained aerial encounters and has continued through congressional hearings, a NASA-led study, and high-profile documentaries featuring claims from former military officials.

Diana Walsh Pasulka, a scholar of religion who studies UFO-related belief systems, argues that official acknowledgment has lent legitimacy to a topic long regarded as fringe. She also notes that popular culture has saturated audiences with extraterrestrial themes, from blockbuster films and children’s movies to long-running science fiction franchises. Research suggests these fictional portrayals shape how people imagine alien life, and when paired with real-world discussions from government figures, the effect can be especially powerful.

The idea that aliens might visit Earth was once widely stigmatized, but that stigma appears to be fading. Jim Harold, host of a long-running paranormal podcast, says many longtime believers feel validated by recent government disclosures and media attention. He also points out that belief in alien visitation crosses political lines, with polling showing similar levels of acceptance among Democrats, Independents, and Republicans. Lawmakers from both parties have publicly expressed interest in UAP investigations, further normalizing the conversation.

Social media has also played a role by allowing people with shared interests to connect and exchange ideas. Lepselter emphasizes that belief is inherently social, shaped through discussion and community rather than held in isolation. Online platforms have helped foster subcultures devoted to a wide range of theories, from extraterrestrial visitation to interdimensional phenomena, expanding the scope of how people interpret unexplained experiences.

At the same time, observers warn that digital spaces can amplify misinformation and reinforce narrow viewpoints. Harold encourages audiences to remain curious but discerning, stressing the importance of evaluating sources carefully and maintaining a balance between open-mindedness and skepticism.

While polls show that belief in alien visitation is becoming more common, some experts are hesitant to describe the trend as transformative. Lepselter says the data do not suggest a sweeping or disruptive shift in worldview, but rather that the idea has become more acceptable to discuss openly. Pasulka, however, believes the trend is likely to continue as official disclosures and cultural influences persist, signaling what she describes as a broader rethinking of how many Americans understand reality itself.