Human-Piloted Alien Craft, developed inside the famous Groom Lake base at Area 51.

Norwegian valley, where a unique anomalous phenomenon has been happening and recorded since the '80s. Mysterious lights in trhe sky have been reported. The Hessdalen lights have attracted the curiosity of scientists. In some cases, there is a new natural phenomenon occurring, yet in others there are structured objects behind the lights.

Governmental committee committed to UFO studies, created in 1979 under the chairmanship of the Room of Lord, chiefed by Count of Clancarty (Brinsley Le Poer Trench, deceased in 1995).

High Resolution Microwave Survey, the former name for the now famous SETI.

Animated entities, so called UFO pilots. In most reports, extra-terrestrials have a body structure similar to the humans: two legs, two arms, a head, eyes, ears. This could suggest the humanoid is the most successful life form in the universe, ideal for the development of an intelligent civilization.

A classification system for anomalous aerial phenomena (UFOs), created by astrophysician Hynek. Up to this day, it's still considered the first scientific approach to classify UFO sightings: lights in the sky, daylight discs, radar-visual cases and CE1, CE2, CE3, CE4.

Hypnosis is an altered mental state usually induced by a procedure known as a hypnotic induction, which is commonly composed of a series of preliminary instructions and suggestions. Hypnotic suggestions may be delivered by a hypnotist in the presence of the subject or may be self-administered. The use of hypnotism for therapeutic purposes is referred to as "hypnotherapy". In ufololgy, hypnosis is often used to recover the memories of abducted individuals. It must be noted though that hypnosis itself is not a safe method, being characterized by extreme suggestibility, relaxation and heightened imagination.

Identified Flying Objects, used to describe that 90% of reports that do find a natural explanation.

Artificial objects, miniaturised, detected inside the bodies of some abductees. It is not fully clear how implants work and their aims. It's plausible to think whoever implanted these tubes wants to track the subjects and eventually study the biochemistry. Studies by Derrel Sims have opened the way for a new understanding of abductions.