Physical sciences[edit]

Physics[edit]

• Autodynamics – alternative to special relativity proposed by Ricardo Carezani based on revised Lorentz transformations. In addition to failing to make accurate predictions at relativistic velocities, the proposed transformations do not correspond to classical velocity addition. Promoters also propose several revisions to the "particle zoo" of subatomic physics, including the nonexistence of neutrinos.^[2][3]
• Bogdanov Affair – was an academic dispute regarding the legitimacy of a series of theoretical physics papers written by French twin brothers Igor and Grichka Bogdanov.^[4]
• Einstein–Cartan–Evans theory – proposed unified theory of physics due to Myron Evans, a Welsh chemist.^[5]
• Electrogravitics – a hypothesis, based on the 1920s work of Thomas Townsend Brown, that an electrical charge applied to a mass can produce an (anti) gravity effect.^[6]

Astronomy and space sciences[edit]

• 2012 millenarianism – a belief that cataclysmic and apocalyptic events were to occur in the year 2012. The proposal was derived from the Mesoamerican Long Count calendar which by most proposed alignments with the Gregorian calendar reached a calendar rollover that year. Doomsday mechanisms were predicted to occur by means of a "galactic alignment", "solar storm", "pole shift", or catastrophic collision with an asteroid, comet, or planet (e.g. Nibiru).^[7][8][9]
• Ancient astronauts – proposal by Erich von Däniken (1968) that Earth was visited by ancient astronauts.^[10] Such beings have been claimed to have initiated the rise of human civilization or provided significant technological assistance to various ancient cultures.^{[11][full citation needed][12]}

• Anunnaki from Nibiru (Sitchin) (variant) - Zecharia Sitchin proposed in his book The 12th Planet (1976) that ancient Sumerian cuneiform suggests that ancient astronauts (the Anunnaki from the planet Nibiru) visited Earth and created human beings through biogenetics. Sitchin claims that these writings tell of a Planet X beyond the dwarf planet Pluto. Scholars have criticized his interpretations and qualifications (noting that he has no degree in Semitic Languages). Michael Heiser, who has a Ph.D. in Hebrew Bible and Semitic Languages has challenged Sitchin to present one text that confirms his claims.^[13][14]
• Ancient astronauts from the Sirius star-system (Temple) (variant) - Robert K. G. Temple's proposal in his book The Sirius Mystery (1976) that the Dogon people of northwestern Mali preserved an account of extraterrestrial visitation by aliens from the Sirius star-system around 5,000 years ago (core evidence the Dogon people and Sirius B claim).^[15]

• Astrology (see also astrology and science) – refers to any of several systems of understanding, interpreting and organizing knowledge about reality and human existence, based on the relative positions and movement of various real and construed celestial bodies.^{[16][17][18][19]}
• Dogon people and Sirius B – a series of claims that the Dogon tribe knew about the white dwarf companion of Sirius despite it being invisible to the naked eye.^[15]
• The Face on Mars – (in Cydonia Mensae) is a rock formation on Mars asserted to be evidence of intelligent, native life on the planet.^[20] High-resolution images taken recently show it to appear less face-like. It features prominently in the works of Richard C. Hoagland and Tom Van Flandern.
• Modern flat Earth beliefs – proposes that the earth is a flat, disc-shaped planet that accelerates upward, producing the illusion of gravity. Proposers of a flat Earth, such as the Flat Earth Society, do not accept compelling evidence, such as photos of planet Earth from space.
• Lunar effect – the belief that the full Moon influences human behavior.^[21]
• Moon landing conspiracy theories – claims that parts of the Apollo program were hoaxed and subsequently covered up. While many of the accusations are best categorized under conspiracy theories, some do attempt to use faulty science to prove that the Moon landing could not have happened, thus qualifying them as pseudoscientific claims.^[21][22][23]
• Nibiru cataclysm – a prediction first made by contactee Nancy Lieder that a mythological planet Nibiru would collide with Earth. After having adjusted her prediction many times, she later claimed the year of the occurrence to be 2012.^{[24][25][26][27][28]}
• Worlds in Collision (Velikovsky) – writer Immanuel Velikovsky proposed in his book Worlds in Collision that ancient texts and geographic evidence show mankind was witness to catastrophic interactions of other planets in our Solar system.^[21]