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{{Short description|Spiral galaxy in the constellation Cetus}} '''NGC 681''' is an [[intermediate spiral galaxy]] in the [[constellation]] of [[Cetus]], located approximately 66.5 million [[li ...

In astronomy, a '''period-luminosity relation''' is a relationship linking the ...Experiment. The OGLE-III Catalog of Variable Stars. I. Classical Cepheids in the Large Magellanic Cloud |author1=Soszynski, I. |author2=Poleski, R. |aut ...

...g list is composed of objects, concepts, phenomena and processes that were discovered or invented by people from the [[Netherlands]]. ...ossils of ''Pithecanthropus erectus'' (now ''Homo erectus'') found in Java in 1891. Estimated to be between 700,000 and 1,000,000 years old, at the time ...

...ours reflect the absorption of the F115W and F150W fluxes of these distant galaxies by the intervening intergalactic medium.|thumb|[[JADES-GS-z13-0]] is the m ...astronomical objects discovered and verified so far, and the time periods in which they were so classified. ...

...de potential]]|content='''[[Absolute electrode potential]]'''}}{{defn|defn=In [[electrochemistry]], according to an [[IUPAC]] definition,<ref>[https://go ...rate at which the velocity of a body changes with time, and the direction in which that change is acting.}} ...