1561 celestial phenomenon over Nuremberg - Wikipedia
The celestial phenomenon over the German city of Nuremberg on April 14, 1561, as printed in an illustrated news notice in the same month A mass sighting of celestial phenomena or unidentified flying objects (UFO) occurred in 1561 above Nuremberg (then a Free Imperial City of the Holy Roman Empire). Ufologists have speculated that these phenomena may have been extraterrestrial spacecraft. Skeptics
Novikov self-consistency principle - Wikipedia
The Novikov self-consistency principle, also known as the Novikov self-consistency conjecture and Larry Niven's law of conservation of history, is a principle developed by Russian physicist Igor Dmitriyevich Novikov in the mid-1980s. Novikov intended it to solve the problem of paradoxes in time travel, which is theoretically permitted in certain solutions of general relativity that contain what ar
Aqua Tofana - Wikipedia
Poison "Manna di San Nicola" (Aqua Tofana), by Pierre Méjanel. Aqua Tofana (also known as Acqua Toffana and Aqua Tufania and Manna di San Nicola) was a strong poison created in Sicily around 1630[1] that was reputedly widely used in Palermo, Naples,[2] Perugia, and Rome, Italy. It has been associated with Giulia Tofana, or Tofania, a woman from Palermo, purportedly the leader of a ring of six pois
Multiservice tactical brevity code - Wikipedia
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The Theory of Interstellar Trade - Wikipedia
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: "The Theory of Interstellar Trade" – news · newspapers · books · scholar · JSTOR (October 2017) (Learn how
Wikipedia:Reliable sources/Perennial sources - Wikipedia
It has been suggested that this page should be split into multiple pages. (discuss) It is not one of Wikipedia's policies or guidelines; rather, its purpose is to explain certain aspects of Wikipedia:Reliable sources guideline. It may reflect differing levels of consensus and vetting. This page in a nutshell: This is a list of repeatedly discussed sources, collected and summarized for convenience.
Z-fighting - Wikipedia
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Z-fighting" – news · newspapers · books · scholar · JSTOR (September 2017) (Learn how and when to remove this message) Demonstration of z-fighting with multiple colors and textures over a grey background
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