Fact Checks

The Challenger vehicle did not truly "explode" as a single instantaneous detonation; it primarily broke up due to aerodynamic loads after the external tank failed, even though a large fireball was observed.

The immediate physical cause of the disaster was failure of the primary and secondary O-ring seals in the aft field joint of the right Solid Rocket Booster, allowing hot gases to escape and ultimately compromise the external tank and vehicle stack.

Human rights organizations have independently documented that Azerbaijani forces killed Armenian civilians in Maragha on April 10, 1992.

The article’s death toll framing is internally inconsistent: it implies "over 100" killed while also presenting a 43–100 overall death range.

Rex Heuermann pleaded guilty on April 8, 2026 to seven murders and admitted to an eighth victim, Karen Vergata.

Tanya Jackson (“Peaches”) and her daughter Tatiana Dykes are no longer believed by police to be victims of the Gilgo Beach serial killings, and Tatiana’s father Andrew Dykes was charged in December 2025.

The United States–Israeli attack on Iran was legitimate under international law as self-defense against an imminent Iranian attack.

UN and IAEA assessments supported the claim that Iran had an active, organized nuclear weapons program at the time the war began.

Kaitlin Armstrong killed Moriah Wilson out of jealousy triggered by Wilson’s romantic involvement with Colin Strickland.

U.S. Marshals located Armstrong in Costa Rica by placing a Facebook want-ad seeking a yoga instructor, leading to her capture.

The mid-20th-century “sexual revolution” is best characterized as a Western social movement that challenged traditional sexual norms, with its core period often placed roughly from the late 1950s to the early 1970s.

The article’s implicit “Western” framing is incomplete because major, historically documented sexual-policy liberalization occurred earlier in Soviet Russia and is sometimes described as a “sexual revolution.”

The 2009 Binghamton shooting involved 13 victims killed and 4 wounded, and the shooter died by suicide (14 total dead including the shooter).

This attack was the deadliest mass shooting by a lone gunman in the state of New York.

Apollo 6’s mission results were officially acknowledged by NASA as not fully meeting its objectives (only some objectives were fully achieved).

Apollo 6 experienced severe pogo oscillations in first-stage flight that exceeded design expectations/limits.

The UK state created in 1801 is the same legal state as the modern United Kingdom, not a successor state created later.

The Irish Free State’s creation in 1922 caused the state to be renamed ‘the United Kingdom of Great Britain and Northern Ireland’ in 1927 (often described as happening on 12 April 1927).

The 2007 Fongoli chimpanzee observations are the first evidence of systematic weapon use in a non-human species.

The Cambridge Declaration on Consciousness (July 7, 2012) establishes that non-human animals (including mammals, birds, and octopuses) possess the neurological substrates that generate consciousness.

The claim that Iran’s Sizdah Be-dar pranks have been played since 536 BC is well-supported.

The article’s statement that the term and practice ‘dorugh-e Sizdah’ were imported from Western April Fools’ traditions into modern Iranian society is questionable as written.

The Warren Commission concluded there was no credible evidence that Lee Harvey Oswald was part of a conspiracy to assassinate President Kennedy.

The HSCA (1979) concluded Kennedy was probably assassinated as a result of a conspiracy, largely based on acoustic evidence from a police Dictabelt recording.