edgepedia

All articles starting with R

22,461 articles

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...Ready for It?

"...Ready for It?" is a 2017 Taylor Swift song, opening track and second single of reputation, written with Max Martin, Shellback, and Ali Payami; it peaked at No. 4 on the Billboard Hot 100 and No. 7 in the UK.

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‘Rudas’/‘Budas’

Rudas/Budas, a road station on the Roman via Traiana in Apulia near Andria, recorded as Rudas on the Tabula Peutingeriana and as Budas in the Ravennate Cosmographia; distinct from Rudiae near Lecce.

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"Repent, Harlequin!" Said the Ticktockman

"'Repent, Harlequin!' Said the Ticktockman" is Harlan Ellison's 1965 dystopian short story, first published in Galaxy, in which the Ticktockman enforces punctuality by shortening lives. It won the 1965 Nebula and 1966 Hugo Awards and stars the jelly-bean-dropping rebel Everett C. Marm.

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[RLK73] IRc 2

[RLK73] IRc 2, or Orion IRc2, is a compact mid-infrared source in the Kleinmann–Low nebula of Orion, once thought to be the region's dominant energy source.

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*Randanum

Randanum, Pleiades place 138532, is an ancient place record identified with modern Randan in central France, attested AD 300-640 as a church or monastery site, cited from Barrington Atlas map 14 I3.

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R

R (r) is the eighteenth letter of the English alphabet, called erre in Italian and rho in Greek, descended from Phoenician through Greek rho and Latin; it names rhotic sounds such as the English approximant [ɹ], varies widely across dialects, and is encoded at U+0052/U+0072.

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R . m . myers herbarium

R.M. Myers Herbarium (MWI), Western Illinois University herbarium founded 1945 by R. Maurice Myers; about 75,000 specimens, sixth-largest in Illinois, focused on west-central Illinois flora.

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R (Miller) v Secretary of State for Exiting the European Union

R (Miller) v Secretary of State for Exiting the European Union [2017] UKSC 5, Miller No. 1: UK Supreme Court case holding 8-3 that Article 50 Brexit notification required an Act of Parliament, not royal prerogative; distinct from the 2019 prorogation case Miller No. 2.

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R (New York City Subway service)

The R, formerly the Broadway-Fourth Avenue Local, is a New York City Subway service that runs local between Forest Hills-71 Av in Queens and Bay Ridge-95 St in Brooklyn.

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R (programming language)

R, also known as GNU S, is a free programming language for statistical computing and graphics, created by Ross Ihaka and Robert Gentleman in New Zealand.

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R And

R Andromedae (R And) is a Mira variable star in Andromeda, varying from magnitude 5.0 to 15.2 over 409 days and notable for technetium in its spectrum.

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R Aql

R Aquilae (R Aql) is a Mira variable red giant in Aquila whose pulsation period has declined from about 365 to about 275 days since 1850.

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R Cluster Gas Field

R Cluster is an ultra-deepwater gas field in Block KG-D6 in the Bay of Bengal off India, commissioned in December 2020 and operated by Reliance Industries and bp.

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R Coronae Borealis

R Coronae Borealis (R CrB) is a hydrogen-deficient, carbon-rich supergiant in Corona Borealis and prototype of the RCB variables, which fade unpredictably when carbon dust clouds obscure the star.

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R Coronae Borealis variable

An R Coronae Borealis variable (RCB star) is a rare hydrogen-deficient, carbon-rich supergiant that stays bright for long periods, then fades deeply, up to 8 magnitudes, as carbon dust clouds obscure it.

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R CrA

R CrA, or R Coronae Australis, is a young, strongly variable Herbig Ae/Be star at the heart of the Coronet cluster in the Corona Australis star-forming region.

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R Dor

R Doradus is a nearby red giant star in Dorado, the closest oxygen-rich AGB star to the Sun, whose surface convection was tracked by ALMA in 2023.

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R Dyche Mullins

R. Dyche Mullins is an American cell biologist at UCSF and an HHMI investigator known for working out how branched actin networks assemble and generate force.

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R Factors

R factors (R plasmids, resistance factors) are bacterial plasmids carrying antibiotic resistance genes, transferable between bacteria by conjugation; discovered in 1950s Japan in multidrug-resistant Shigella, structured with transfer, replication, and resistance genes.

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R gene

R gene (resistance gene): a plant gene conferring pathogen resistance via gene-for-gene recognition of pathogen Avr effectors, mostly NB-LRR/NLR receptors; first cloned was maize Hm1 (1992), with 314 R genes cataloged by 2018.

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R Hya

R Hydrae (R Hya) is a Mira variable red giant in Hydra, the third Mira discovered in 1704, with a period that shortened from 495 to 389 days.

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R Leo

R Leonis (R Leo) is a Mira-type variable star in Leo, a red giant whose brightness swings between magnitudes 5.4 and 10.5 over about 310 days.

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R Mason Thomas

R Mason Thomas, born 2004, is an American football edge rusher from Oklahoma drafted No. 40 overall in 2026 by the Kansas City Chiefs; a 6'2", 241-pound speed rusher with 17 college sacks and first-team All-SEC honors.

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R Monocerotis

R Monocerotis (R Mon) is a young, variable Herbig Ae/Be star of roughly 8 solar masses in Monoceros, about 2,500 light-years away, illuminating NGC 2261, Hubble's Variable Nebula.

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R Praggnanandhaa (ராமேஷ்பாபு பிரக்ஞானந்தா)

R Praggnanandhaa (ராமேஷ்பாபு பிரக்ஞானந்தா), Indian chess grandmaster, GM at 12 years 10 months, world No. 4; beat Carlsen repeatedly and won Norway Chess and the 2026 Grand Chess Tour.

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R Scuti

R Scuti (R Sct) is a bright RV Tauri variable star in Scutum, discovered in 1795, pulsating with alternating deep and shallow minima and one of the longest observed records.

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R U Still Down? (Remember Me)

R U Still Down? (Remember Me) is 2Pac's first posthumous album of unreleased material, released November 25, 1997 by Afeni Shakur's Amaru Entertainment on Interscope, a 26-song double album of 1992–1994 recordings that sold 549,000 copies in its first week and went multi-platinum.

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R v Askov

R v Askov, [1990] 2 SCR 1199, a Supreme Court of Canada Charter decision; nearly two-year Peel County trial delay breached s. 11(b), producing tens of thousands of stays in Ontario.

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R v Brown

R v Brown [1993] UKHL 19, [1994] 1 AC 212: House of Lords case holding that consent is no defence to actual bodily harm or wounding inflicted in consensual sadomasochistic activity, distinguished in R v Wilson and restated by section 71 of the Domestic Abuse Act 2021.

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R v Dudley and Stephens

R v Dudley and Stephens (1884) 14 QBD 273, also called Regina v Dudley and Stephens, an English Queen's Bench Division case from the Mignonette shipwreck, held that necessity is not a defence to murder; convicted sailors' death sentences were commuted to six months.