U.S. President Donald Trump has recently ordered the start of a process to declassify government documents related to extraterrestrial life, unidentified anomalous phenomena (UAP), UFOs, and associated information. Alongside this development—and the upcoming June premiere of Steven Spielberg’s film Disclosure Day—the idea of “disclosure” has once again become one of the most widely discussed topics in both scientific and public discourse, according to Space.com.

What would happen if an official announcement were made confirming contact with extraterrestrial intelligence or evidence of their presence? Space.com gathered opinions from leading experts, including historians, astronomers, philosophers, and investigative journalists.

The Appetite for Disclosure May Never Be Satisfied

Greg Eghigian, a professor at the Pennsylvania State University and author of the book After the Flying Saucers Came: A Global History of the UFO Phenomenon, observed that every government disclosure in UFO history has triggered two opposing reactions.

He explained that some people interpret released materials as final proof that nothing unusual exists, while others focus on redactions and missing documents, insisting that governments are still hiding critical secrets. He argued that the very existence of secrecy means that even visible openness can be perceived as an attempt to conceal deeper secrets, and that public demand for disclosure is unlikely ever to be fully satisfied.

Keeping an Open Mind

Steven J. Dick, a former historian at NASA and author of Astrobiology, Discovery, and Societal Impact, approaches UAP research cautiously. He refers to such phenomena as a form of “direct Earth contact” and believes they deserve serious scientific investigation regardless of whether they are linked to extraterrestrial intelligence.

As a participant in the Galileo Project at Harvard University, he favors building new observational tools rather than relying on blurry historical images.

He expressed doubt that any future disclosure would reveal truly substantial information. However, he noted that the discovery of alien bodies or technologies—even from the distant past—would fundamentally reshape humanity’s scientific, theological, philosophical, and cultural worldview. He also pointed out that speculation about extraterrestrial life has already led to the emergence of a new field sometimes referred to as astrotheology.

The Bureaucratic Dimension

Avi Loeb, a well-known astronomer at Harvard University and leader of the Galileo Project, highlighted a bureaucratic aspect of the disclosure debate.

He explained that intelligence agencies may be reluctant to publicly admit the existence of objects they cannot identify, especially given the large budgets devoted to national security. He suggested that a practical first step would be to declassify incidents from at least 50 years ago, since the technologies involved would no longer pose strategic risks. He also indicated his willingness to assist governments in analyzing such historical cases.

A Mix of Anxiety and Excitement

Carol Cleland, a professor at the University of Colorado Boulder and researcher at the SETI Institute, remains skeptical about the likelihood of a true disclosure.

She suggested that if disclosure did occur, some people would dismiss it as fake, others would embrace it with near-religious enthusiasm, and many would simply continue with their everyday lives unaffected.

She added that her own reaction would likely be mixed: concern about the intentions of intelligent beings that might have observed humanity for a long time, combined with excitement at the realization that humanity is not alone in the Universe. For scientists and philosophers, she noted, such an event would represent a profound revolution.

Can Humanity Handle the Truth?

George Knapp, a veteran reporter known for covering UFO topics, expressed perhaps the greatest caution.

He suggested that while the public often claims it could handle the truth, it is unclear whether humanity truly understands what that truth might be. He explained that many people feel prepared for the idea of extraterrestrials arriving from distant planets—an idea widely explored in films and television—but that more unusual scenarios could seriously challenge religious beliefs and assumptions about human origins.

He concluded that people tend to assume both that they could handle the truth and that governments possess it, but he was not convinced that either assumption is necessarily correct.

In Brief

The question of disclosure regarding extraterrestrials and UAP remains one of the most complex and emotionally charged topics in modern science and public discourse. History shows that each partial release of information often increases suspicion rather than resolving it. Experts warn that even if an official announcement were someday made, public reactions would likely vary widely—from outright denial and religious fervor to indifference and deep concern.

Many scientists believe that instead of waiting for a dramatic “Disclosure Day,” the more productive path is to focus on collecting reliable scientific data. The human fascination with mystery, it seems, is unlikely ever to be fully satisfied.