Category:C-Class Astronomy articles
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Astronomy articles rated as C-class on the Wikipedia 1.0 Assessment Scale. Add items to this category by typing {{WPAstronomy|class=C}} on the article's talk page.
Pages in category "C-Class Astronomy articles"
The following 200 pages are in this category, out of approximately 2,838 total. This list may not reflect recent changes.
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R
- Talk:R Apodis
- Talk:R Aquarii
- Talk:R Coronae Borealis
- Talk:Radcliffe Telescope
- Talk:Radial velocity
- Talk:Radiation pressure
- Talk:Radiative equilibrium
- Talk:Radio astronomy
- Talk:Radio Galaxy Zoo
- Talk:Radio-quiet neutron star
- Talk:Rampart crater
- Talk:RAPID-L
- Talk:RATAN-600
- Talk:RAVE (survey)
- Talk:RCW 36
- Talk:Grote Reber
- Talk:Ernst von Rebeur-Paschwitz
- Talk:Rafael Rebolo López
- Talk:Luisa Rebull
- Talk:Red clump
- Talk:Red supergiant
- Talk:Red-giant branch
- Talk:Martin Rees
- Talk:Reflecting instrument
- Talk:Reflecting telescope
- Talk:Refracting telescope
- Talk:Regiomontanus
- Talk:Regulus
- Talk:Relativistic beaming
- Talk:Relaxation (physics)
- Talk:Religious cosmology
- Talk:Reticle
- Talk:Reticulum
- Talk:Retrograde and prograde motion
- Talk:Rhea (moon)
- Talk:Rho Cassiopeiae
- Talk:Rho Geminorum
- Talk:Rho Ophiuchi cloud complex
- Talk:Rho Puppis
- Talk:Giovanni Battista Riccioli
- Talk:R. Michael Rich
- Talk:Carol Jane Anger Rieke
- Talk:Adam Riess
- Talk:Ring Nebula
- Talk:Ring system
- Talk:Rings of Earth
- Talk:Rings of Rhea
- Talk:Ritchey (Martian crater)
- Talk:Walter Orr Roberts
- Talk:Robotic telescope
- Talk:Roche limit
- Talk:Diego Rodríguez (mathematician)
- Talk:Helisaeus Roeslin
- Talk:Rogue planet
- Talk:Ronald F. Scott
- Talk:Rosalind Franklin (rover)
- Talk:ROSAT
- Talk:Roscosmos Cosmonaut Corps
- Talk:Ross 154
- Talk:Ross 248
- Talk:William Parsons, 3rd Earl of Rosse
- Talk:Rotating radio transient
- Talk:Rotation
- Talk:Rotation period (astronomy)
- Talk:Marta Graciela Rovira
- Talk:Sheila Rowan (physicist)
- Talk:Royal Observatory, Cape of Good Hope
- Talk:Royal Observatory, Edinburgh
- Talk:RR Lyncis
- Talk:RR Lyrae
- Talk:RR Lyrae variable
- Talk:RS Canum Venaticorum
- Talk:RS Sagittarii
- Talk:RT Persei
- Talk:RT Virginis
- Talk:Ruach Planitia
- Talk:RV Tauri
- Talk:RW Persei
- Talk:RW Tauri
- Talk:RX J1532.9+3021
- Talk:RY Persei
- Talk:Martin Ryle
S
- Talk:S Apodis
- Talk:S Doradus
- Talk:S Persei
- Talk:S-process
- Talk:S-type star
- Talk:S/2002 N 5
- Talk:S/2021 N 1
- Talk:S/2023 U 1
- Talk:S2 (star)
- Talk:Johannes de Sacrobosco
- Talk:Sagan Planet Walk
- Talk:Sagittarius (constellation)
- Talk:Sagittarius Dwarf Spheroidal Galaxy
- Talk:Saiph
- Talk:José Francisco Salgado
- Talk:Sample Analysis at Mars
- Talk:Sample-return mission
- Talk:Santa Rosa de Viterbo meteorite
- Talk:Sarah L. Krizmanich Telescope
- Talk:Ata Sarajedini
- Talk:Nicolas Sarrabat
- Talk:Satellite phone
- Talk:Satellite system (astronomy)
- Talk:Saturn Electrostatic Discharges
- Talk:Saturn's hexagon
- Talk:Sandra Savaglio
- Talk:Hanumant Shankar Sawant
- Talk:Anna Scaife
- Talk:Kevin Schawinski
- Talk:Schiaparelli EDM
- Talk:Giovanni Schiaparelli
- Talk:Joan T. Schmelz
- Talk:Schmidt camera
- Talk:Brian Schmidt
- Talk:Britney Schmidt
- Talk:Scholz's Star
- Talk:Erasmus Oswald Schreckenfuchs
- Talk:Johann Hieronymus Schröter
- Talk:Wilhelm Schur
- Talk:Karl Schwarzschild
- Talk:Scientific information from the Mars Exploration Rover mission
- Talk:Scorpius
- Talk:Scorpius X-1
- Talk:Sculptor Galaxy
- Talk:Scutum (constellation)
- Talk:SDSS 1557
- Talk:SDSS 1624+00
- Talk:SDSS J1228+1040
- Talk:SDSS J001820.5−093939.2
- Talk:Sara Seager
- Talk:Seasonal flows on warm Martian slopes
- Talk:Angelo Secchi
- Talk:Secondary crater
- Talk:Thomas Jefferson Jackson See
- Talk:Segue 1
- Talk:Segue 3
- Talk:Marc Seigar
- Talk:Seki Takakazu
- Talk:Selection of Discovery Mission 13 and 14
- Talk:Selenography
- Talk:Self-gravitation
- Talk:September equinox
- Talk:Serpens–Aquila Rift
- Talk:SETI Institute
- Talk:SETI@home
- Talk:Sextant
- Talk:Carl K. Seyfert
- Talk:Shape of the universe
- Talk:Harlow Shapley
- Talk:Shenzhou 12
- Talk:Aomawa Shields
- Talk:Shockwave cosmology
- Talk:Carolyn S. Shoemaker
- Talk:Eugene Merle Shoemaker
- Talk:Mark R. Showalter
- Talk:Siarnaq
- Talk:Sidereus Nuncius
- Talk:Andrew Siemion
- Talk:Sight reduction
- Talk:Sigma Canis Majoris
- Talk:Sigma Coronae Borealis
- Talk:Sigma Librae
- Talk:Sigma Orionis
- Talk:Sigma Pi Sigma
- Talk:Sigma Scorpii
- Talk:Signs Of LIfe Detector
- Talk:Sikhote-Alin meteorite
- Talk:Silicon-burning process
- Talk:Sinus Sabaeus quadrangle
- Talk:Edward M. Sion
- Talk:Sirius (mythology)
- Talk:Jonathan Sisson
- Talk:Zecharia Sitchin
- Talk:Skalnate Pleso Atlas of the Heavens
- Talk:Sky
- Talk:The Sleepwalkers: A History of Man's Changing Vision of the Universe
- Talk:Vesto Slipher
- Talk:Sloan Digital Sky Survey
- Talk:Small Dark Spot
- Talk:Small Magellanic Cloud
- Talk:Small planet radius gap
- Talk:SMART-1
- Talk:Becky Smethurst
- Talk:Henry John Stephen Smith
- Talk:George Smoot