A UFO whistleblower has named a declassified report that he said shows the CIA's involvement with extraterrestrial technology.

A well-known conspiracy theory (also seen in The X-Files) attests that aliens are in communication with the U.S. government, providing knowledge and advanced weaponry, or engaged in secret wars with the military.

Americans "deserve the truth," a U.S. congressman has told a press conference as part of a wider transparency campaign.

Dr. Hal Puthoff claims the U.S. has recovered remains of four separate species of alien life from UFOs, citing people involved in the recoveries.

Fresh allegations that US intelligence agencies may be secretly holding recovered alien technology have revived one of Washington's most persistent debates, after a prominent UFO whistleblower claimed that billions of dollars are being directed into concealed programmes shielded from congressional oversight.

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a government website depicts non-citizens as extraterrestrials.

When ET phones, don’t pick up. Scientists have outlined a set of protocols for responding to extraterrestrial contact, including a bizarre directive to refrain from answering cosmic correspondence. Adopted by the International Academy of Astronautics (IAA),

Former CIA-linked 'psychic spy' Lyn Buchanan has claimed that alien bases and UFO repair hubs are hidden inside four remote mountains, from Alaska to Zimbabwe.