Revision 1576184 of "List of astronomical topics (N-Z)" on enwiki

See also: [[list of astronomical topics]]

__NOTOC__
[[#N|N]] [[#O|O]] [[#P|P]] [[#Q|Q]] [[#R|R]] [[#S|S]] [[#T|T]] [[#U|U]] [[#V|V]] [[#W|W]] [[#X|X]] [[#Y|Y]] [[#Z|Z]]

==N==

[[N-body problem]] [[Talk:N-body problem| ]] --
[[Nabu-rimanni]] [[Talk:Nabu-rimanni| ]] --
[[Nadir]] [[Talk:Nadir| ]] --
[[Naiad]] [[Talk:Naiad| ]] --
[[Naiad (moon)]] [[Talk:Naiad (moon)| ]] --
[[Naked singularity]] [[Talk:Naked singularity| ]] --
[[Naos]] [[Talk:Naos| ]] --
[[John Napier|Napier, John]] [[Talk:John Napier| ]] --
[[NASA]] [[Talk:NASA| ]] --
[[National Optical Astronomy Observatories]] [[Talk:National Optical Astronomy Observatories| ]] --
[[National Optical Astronomy Observatory]] [[Talk:National Optical Astronomy Observatory| ]] --
[[National Radio Astronomy Observatory]] [[Talk:National Radio Astronomy Observatory| ]] --
[[Natural satellite]] [[Talk:Natural satellite| ]] --
[[NEAR Shoemaker]] [[Talk:NEAR Shoemaker| ]] --
[[Near-Earth asteroid]] [[Talk:Near-Earth asteroid| ]] --
[[Near-Earth object]] [[Talk:Near-Earth object| ]] --
[[Nebula]] [[Talk:Nebula| ]] --
[[Nebular hypothesis]] [[Talk:Nebular hypothesis| ]] --
[[Nectarian]] [[Talk:Nectarian| ]] --
[[Nectarian System]] [[Talk:Nectarian System| ]] --
[[Nemesis (star)]] [[Talk:Nemesis (star)| ]] --
[[Nemontemi]] [[Talk:Nemontemi| ]] --
[[Neptune (planet)]] [[Talk:Neptune (planet)| ]] --
[[Nereid (moon)]] [[Talk:Nereid (moon)| ]] --
[[John von Neumann|von Neumann, John]] [[Talk:John von Neumann| ]] --
[[Neutrino]] [[Talk:Neutrino| ]] --
[[Neutrino mass]] [[Talk:Neutrino mass| ]] --
[[Neutrino oscillation]] [[Talk:Neutrino oscillation| ]] --
[[Neutron]] [[Talk:Neutron| ]] --
[[Neutron star]] [[Talk:Neutron star| ]] --
[[Neutronium]] [[Talk:Neutronium| ]] --
[[Rolf Nevanlinna|Nevanlinna, Rolf]] [[Talk:Rolf Nevanlinna| ]] --
[[New General Catalogue]] [[Talk:New General Catalogue| ]] --
[[Simon Newcomb|Newcomb, Simon]] [[Talk:Simon Newcomb| ]] --
[[Newcomb's Tables of the Sun]] [[Talk:Newcomb's Tables of the Sun| ]] --
[[New moon]] [[Talk:New moon| ]] --
[[Newton's laws of motion]] [[Talk:Newton's laws of motion| ]] --
[[Newtonian physics]] [[Talk:Newtonian physics| ]] --
[[Newtonian telescope]] [[Talk:Newtonian telescope| ]] --
[[Isaac Newton|Newton, Isaac]] [[Talk:Isaac Newton| ]] --
[[Next Generation Space Telescope]] [[Talk:Next Generation Space Telescope| ]] --
[[NGC 1068]] [[Talk:NGC 1068| ]] --
[[NGC 2244]] [[Talk:NGC 2244| ]] --
[[NGC 2264]] [[Talk:NGC 2264| ]] --
[[NGC 3227]] [[Talk:NGC 3227| ]] --
[[NGC 3516]] [[Talk:NGC 3516| ]] --
[[NGC 4321]] [[Talk:NGC 4321| ]] --
[[NGC 4486]] [[Talk:NGC 4486| ]] --
[[NGC 4593]] [[Talk:NGC 4593| ]] --
[[NGC 5128]] [[Talk:NGC 5128| ]] --
[[NGC 6027]] [[Talk:NGC 6027| ]] --
[[NGC 6171]] [[Talk:NGC 6171| ]] --
[[NGC 6240]] [[Talk:NGC 6240| ]] --
[[NGC 6751]] [[Talk:NGC 6751| ]] --
[[NGC 7742]] [[Talk:NGC 7742| ]] --
[[NGST]] [[Talk:NGST| ]] --
[[Nice Observatory]] [[Talk:Nice Observatory| ]] --
[[Seth Barnes Nicholson|Nicholson, Seth Barnes]] [[Talk:Seth Barnes Nicholson| ]] --
[[Niels Bohr Institute]] [[Talk:Niels Bohr Institute| ]] --
[[Night]] [[Talk:Night| ]] --
[[Peter Nilson|Nilson, Peter]] [[Talk:Peter Nilson| ]] --
[[NOAO]] [[Talk:NOAO| ]] --
[[Node]] [[Talk:Node| ]] --
[[Node (astronomy)]] [[Talk:Node (astronomy)| ]] --
[[Non-Euclidean geometry]] [[Talk:Non-Euclidean geometry| ]] --
[[Non-standard cosmology]] [[Talk:Non-standard cosmology| ]] --
[[Norma (constellation)]] [[Talk:Norma (constellation)| ]] --
[[North America Nebula]] [[Talk:North America Nebula| ]] --
[[North Pole]] [[Talk:North Pole| ]] --
[[North Star]] [[Talk:North Star| ]] --
[[Nova]] [[Talk:Nova| ]] --
[[Domenico Maria Novara da Ferrara|Novara da Ferrara, Domenico Maria]] [[Talk:Domenico Maria Novara da Ferrara| ]] --
[[Igor Dmitrievich Novikov|Novikov, Igor Dmitrievich]] [[Talk:Igor Dmitrievich Novikov| ]] --
[[Petr Sergeevich Novikov|Novikov, Petr Sergeevich]] [[Talk:Petr Sergeevich Novikov| ]] --
[[Nuclear decay]] [[Talk:Nuclear decay| ]] --
[[Nuclear fusion]] [[Talk:Nuclear fusion| ]] --
[[Nucleocosmochronology]] [[Talk:Nucleocosmochronology| ]] --
[[Nucleosynthesis]] [[Talk:Nucleosynthesis| ]] --
[[Nutation]] [[Talk:Nutation| ]]

==O==

[[Oak Ridge Observatory]] [[Talk:Oak Ridge Observatory| ]] --
[[Oberon (moon)]] [[Talk:Oberon (moon)| ]] --
[[Hermann Julius Oberth|Oberth, Hermann Julius]] [[Talk:Hermann Julius Oberth| ]] --
[[Obliquity of the ecliptic]] [[Talk:Obliquity of the ecliptic| ]] --
[[Obruchev crater]] [[Talk:Obruchev crater| ]] --
[[Observatory]] [[Talk:Observatory| ]] --
[[Observatory of Paris]] [[Talk:Observatory of Paris| ]] --
[[Occultation]] [[Talk:Occultation| ]] --
[[Oceanus Procellarum]] [[Talk:Oceanus Procellarum| ]] --
[[Octans]] [[Talk:Octans| ]] --
[[Odysseus crater]] [[Talk:Odysseus crater| ]] --
[[OH maser]] [[Talk:OH maser| ]] --
[[Olbers' paradox]] [[Talk:Olbers' paradox| ]] --
[[Heinrich Wilhelm Olbers|Olbers, Heinrich Wilhelm Mathias]] [[Talk:Heinrich Wilhelm Olbers| ]] --
[[Olympus Mons]] [[Talk:Olympus Mons| ]] --
[[Omega Centauri]] [[Talk:Omega Centauri| ]] --
[[Oort cloud]] [[Talk:Oort cloud| ]] --
[[Jan Oort|Oort, Jan]] [[Talk:Jan Oort| ]] --
[[Open cluster]] [[Talk:Open cluster| ]] --
[[Ophelia (moon)|Ophelia]] [[Talk:Ophelia (moon)| ]] --
[[Ophiuchus]] [[Talk:Ophiuchus| ]] --
[[Oppenheimer-Volkoff limit]] [[Talk:Oppenheimer-Volkoff limit| ]] --
[[Opposition (astronomy)]] [[Talk:Opposition (astronomy)| ]] --
[[Optical astronomy]] [[Talk:Optical astronomy| ]] --
[[Optical axis]] [[Talk:Optical axis| ]] --
[[Optical binary]] [[Talk:Optical binary| ]] --
[[Optical depth]] [[Talk:Optical depth| ]] --
[[Optical double]] [[Talk:Optical double| ]] --
[[Optical spectrum]] [[Talk:Optical spectrum| ]] --
[[Optics]] [[Talk:Optics| ]] --
[[Orbit]] [[Talk:Orbit| ]] --
[[Orbital elements]] [[Talk:Orbital elements| ]] --
[[Orbital period]] [[Talk:Orbital period| ]] --
[[Orbital plane]] [[Talk:Orbital plane| ]] --
[[Orbital resonance]] [[Talk:Orbital resonance| ]] --
[[Orbital revolution]] [[Talk:Orbital revolution| ]] --
[[Orbital speed]] [[Talk:Orbital speed| ]] --
[[Orion (constellation)|Orion]] [[Talk:Orion (constellation)| ]] --
[[Orion Nebula]] [[Talk:Orion Nebula| ]] --
[[Orrery]] [[Talk:Orrery| ]] --
[[Oscillatory Universe]] [[Talk:Oscillatory Universe| ]] --
[[Outer Rook Mountains]] [[Talk:Outer Rook Mountains| ]] --
[[Overwhelmingly Large Telescope]] [[Talk:Overwhelmingly Large Telescope| ]] -- 
[[Owl Nebula]] [[Talk:Owl Nebula| ]] --
[[Ozone layer]] [[Talk:Ozone layer| ]]

==P==

[[P-process]] [[Talk:P-process| ]] --
[[Palermo Technical Impact Hazard Scale]] [[Talk:Palermo Technical Impact Hazard Scale| ]] --
[[Palimpsest]] [[Talk:Palimpsest| ]] --
[[Pallasite]] [[Talk:Pallasite| ]] --
[[Palomar Observatory Sky Survey]] [[Talk:Palomar Observatory Sky Survey| ]] --
[[Pan (moon)]] [[Talk:Pan (moon)| ]] --
[[Pandora (moon)]] [[Talk:Pandora (moon)| ]] --
[[Panspermia]] [[Talk:Panspermia| ]] --
[[Panzano Observatory]] [[Talk:Panzano Observatory| ]] --
[[Parabolic mirror]] [[Talk:Parabolic mirror| ]] --
[[Parabolic reflector]] [[Talk:Parabolic reflector| ]] --
[[Parallax]] [[Talk:Parallax| ]] -- 
[[Parallel]] [[Talk:Parallel| ]] --
[[Paranal Observatory]] [[Talk:Paranal Observatory| ]] --
[[Paris Observatory]] [[Talk:Paris Observatory| ]] --
[[Parsec]] [[Talk:Parsec| ]] --
[[William Parsons|Parsons, William]] [[Talk:William Parsons| ]] --
[[Particle horizon]] [[Talk:Particle horizon| ]] --
[[Particle physics]] [[Talk:Particle physics| ]] --
[[Pasiphae (moon)]] [[Talk:Pasiphae (moon)| ]] --
[[Pauli exclusion principle]] [[Talk:Pauli exclusion principle| ]] --
[[Pavo (constellation)]] [[Talk:Pavo (constellation)| ]] --
[[Cecilia Payne-Gaposchkin|Payne-Gaposchkin, Cecilia]] [[Talk:Cecilia Payne-Gaposchkin| ]] --
[[Pegasus]] [[Talk:Pegasus| ]] --
[[Pegasus (constellation)]] [[Talk:Pegasus (constellation)| ]] --
[[Peirce crater]] [[Talk:Peirce crater| ]] --
[[Roger Penrose|Penrose, Roger]] [[Talk:Roger Penrose| ]] --
[[Penumbra]] [[Talk:Penumbra| ]] --
[[Periapsis]] [[Talk:Periapsis| ]] --
[[Perpetual calendar]] [[Talk:Perpetual calendar| ]] --
[[Charles Dillon Perrine|Perrine, Charles Dillon]] [[Talk:Charles Dillon Perrine| ]] --
[[Perseus (constellation)]] [[Talk:Perseus (constellation)| ]] --
[[Perseids]] [[Talk:Perseids| ]] --
[[Persian calendar]] [[Talk:Persian calendar| ]] --
[[Phecda]] [[Talk:Phecda| ]] --
[[Philosophiae Naturalis Principia Mathematica]] [[Talk:Philosophiae Naturalis Principia Mathematica| ]] --
[[Phoenix (constellation)]] [[Talk:Phoenix (constellation)| ]] --
[[Phoebe (moon)]] [[Talk:Phoebe (moon)| ]] --
[[Phobos (moon)]] [[Talk:Phobos (moon)| ]] --
[[Photographic plate]] [[Talk:Photographic plate| ]] --
[[Photometry]] [[Talk:Photometry| ]] --
[[Photon]] [[Talk:Photon| ]] --
[[Photon decoupling]] [[Talk:Photon decoupling| ]] --
[[Photosphere]] [[Talk:Photosphere| ]] --
[[Physical constant]] [[Talk:Physical constant| ]] --
[[Physical geodesy]] [[Talk:Physical geodesy| ]] --
[[Physical law]] [[Talk:Physical law| ]] --
[[Physical phenomenon]] [[Talk:Physical phenomenon| ]] --
[[Giuseppe Piazzi|Piazzi, Giuseppe]] [[Talk:Giuseppe Piazzi| ]] --
[[Charles Piazzi Smyth|Piazzi Smyth, Charles]] [[Talk:Charles Piazzi Smyth| ]] --
[[Picard crater]] [[Talk:Picard crater| ]] --
[[Edward Pickering|Pickering, Edward]] [[Talk:Edward Pickering| ]] --
[[William Henry Pickering|Pickering, William Henry]] [[Talk:William Henry Pickering| ]] --
[[Pictor]] [[Talk:Pictor| ]] --
[[Pierre Auger Observatory]] [[Talk:Pierre Auger Observatory| ]] --
[[Pinwheel Galaxy]] [[Talk:Pinwheel Galaxy| ]] --
[[Pisces]] [[Talk:Pisces| ]] --
[[Piscis Austrinus]] [[Talk:Piscis Austrinus| ]] --
[[Planck units]] [[Talk:Planck units| ]] --
[[Planck's law of black body radiation]] [[Talk:Planck's law of black body radiation| ]] --
[[Max Planck|Planck, Max]] [[Talk:Max Planck| ]] --
[[Planet]] [[Talk:Planet| ]] --
[[Planetarium]] [[Talk:Planetarium| ]] --
[[Planetary Hypothesis]] [[Talk:Planetary Hypothesis| ]] --
[[Planetary nebula]] [[Talk:Planetary nebula| ]] --
[[Planetary motion]] [[Talk:Planetary motion| ]] --
[[Planetary nomenclature]] [[Talk:Planetary nomenclature| ]] --
[[Planetary phase]] [[Talk:Planetary phase| ]] --
[[Planetary ring]] [[Talk:Planetary ring| ]] --
[[Planetesimal]] [[Talk:Planetesimal| ]] --
[[Planetoid]] [[Talk:Planetoid| ]] --
[[Planetology]] [[Talk:Planetology| ]] --
[[Planisphaerium]] [[Talk:Planisphaerium| ]] --
[[Plasma]] [[Talk:Plasma| ]] --
[[Plasma equilibria and stability]] [[Talk:Plasma equilibria and stability| ]] --
[[Plasma physics]] [[Talk:Plasma physics| ]] --
[[Pleiades]] [[Talk:Pleiades| ]] --
[[Plekhnaton]] [[Talk:Plekhnaton| ]] --
[[Ptolemaic system]] [[Talk:Ptolemaic system| ]] --
[[Plutino]] [[Talk:Plutino| ]] --
[[Pluto (planet)]] [[Talk:Pluto (planet)| ]] --
[[Norman Robert Pogson|Pogson, Norman Robert]] [[Talk:Norman Robert Pogson| ]] --
[[Henri Poincaré|Poincaré, Henri]] [[Talk:Henri Poincaré| ]] --
[[Simeon Poisson|Poisson, Siméon-Denis]] [[Talk:Simeon Poisson| ]] --
[[Polar Aurora]] [[Talk:Polar Aurora| ]] --
[[Polar coordinates]] [[Talk:Polar coordinates| ]] --
[[Polar coordinate system]] [[Talk:Polar coordinate system| ]] --
[[Polar distance]] [[Talk:Polar distance| ]] --
[[Polarimetry]] [[Talk:Polarimetry| ]] --
[[Polaris]] [[Talk:Polaris| ]] --
[[Polarization]] [[Talk:Polarization| ]] --
[[Polarized light]] [[Talk:Polarized light| ]] --
[[geographical pole|Pole]] [[Talk:Pole| ]] --
[[Pollux]] [[Talk:Pollux| ]] --
[[John Pond|Pond, John]] [[Talk:John Pond| ]] --
[[Jean-Louis Pons|Pons, Jean-Louis]] [[Talk:Jean-Louis Pons| ]] --
[[Porrima]] [[Talk:Porrima| ]] --
[[Portia]] [[Talk:Portia| ]] --
[[Portia (moon)]] [[Talk:Portia (moon)| ]] --
[[Posidonius]] [[Talk:Posidonius| ]] --
[[Positional astronomy]] [[Talk:Positional astronomy| ]] --
[[Herman Potocnik|Potočnik, Herman]] [[Talk:Herman Potocnik| ]] --
[[Potsdam Observatory]] [[Talk:Potsdam Observatory| ]] --
[[Pre-Nectarian]] [[Talk:Pre-Nectarian| ]] --
[[Precession]] [[Talk:Precession| ]] --
[[Joseph Priestley|Priestley, Joseph]] [[Talk:Joseph Priestley| ]] --
[[Primary mirror]] [[Talk:Primary mirror| ]] --
[[Prime meridian]] [[Talk:Prime meridian| ]] --
[[Primordial black hole]] [[Talk:Primordial black hole| ]] --
[[Primordial material]] [[Talk:Primordial material| ]] --
[[Procyon]] [[Talk:Procyon| ]] --
[[Procyon A]] [[Talk:Procyon A| ]] --
[[Procyon B]] [[Talk:Procyon B| ]] --
[[Prograde and retrograde motion]] [[Talk:Prograde and retrograde motion| ]] --
[[Prograde orbit]] [[Talk:Prograde orbit| ]] --
[[Proleptic Gregorian Calendar]] [[Talk:Proleptic Gregorian Calendar| ]] --
[[Proleptic Julian calendar]] [[Talk:Proleptic Julian calendar| ]] --
[[Prometheus (moon)]] [[Talk:Prometheus (moon)| ]] --
[[Promonitorium Agarum]] [[Talk:Promonitorium Agarum| ]] --
[[Proper motion]] [[Talk:Proper motion| ]] --
[[Proper motion distance]] [[Talk:Proper motion distance| ]] --
[[Proportional]] [[Talk:Proportional| ]] --
[[Protoplanetary disc|Proplyd]] --
[[Marijan Prosen Majo|Prosen, Marjan Majo]] [[Talk:Marijan Prosen Majo| ]] --
[[Prospero]] [[Talk:Prospero| ]] --
[[Proteus (moon)]] [[Talk:Proteus (moon)| ]] --
[[Proton]] [[Talk:Proton| ]] --
[[Proton-antiproton imbalance]] [[Talk:Proton-antiproton imbalance| ]] --
[[Proton-proton chain]] [[Talk:Proton-proton chain| ]] --
[[Proto-star]] [[Talk:Proto-star| ]] --
[[Protoplanetary disc]] --
[[Protostar]] [[Talk:Protostar| ]] --
[[Protostellar disc]] 
[[Proxima Centauri]] [[Talk:Proxima Centauri| ]] --
[[Prussian tables]] [[Talk:Prussian tables| ]] --
[[Prutenicae Tabulae]] [[Talk:Prutenicae Tabulae| ]] --
[[Ptolemy]] [[Talk:Ptolemy| ]] --
[[Ptolemy Cluster]] [[Talk:Ptolemy Cluster| ]] --
[[Puck (moon)]] [[Talk:Puck (moon)| ]] --
[[Pulsar]] [[Talk:Pulsar| ]] --
[[Puppis]] [[Talk:Puppis| ]] --
[[Pwyll crater]] --
[[Pyxis]] [[Talk:Pyxis| ]]

==Q==

[[Quadrant]] [[Talk:Quadrant| ]] --
[[Quadrivium]] [[Talk:Quadrivium| ]] --
[[Quantum chromodynamics]] [[Talk:Quantum chromodynamics| ]] --
[[Quantum electrodynamics]] [[Talk:Quantum electrodynamics| ]] --
[[Quantum field theory]] [[Talk:Quantum field theory| ]] --
[[Quantum gravity]] [[Talk:Quantum gravity| ]] --
[[Quantum mechanics]] [[Talk:Quantum mechanics| ]] --
[[Quaoar]] [[Talk:Quaoar| ]] --
[[Quark]] [[Talk:Quark| ]] --
[[Quark-antiquark epoch]] [[Talk:Quark-antiquark epoch| ]] --
[[Quasar]] [[Talk:Quasar| ]] --
[[Quasar, Redshifts and Controversies]] [[Talk:Redshifts and Controversies Quasar| ]] --
[[Adolphe Quetelet|Quetelet, Lambert Adolphe Jacques]] [[Talk:Adolphe Quetelet| ]] --
[[Didier Queloz|Queloz, Didier]] [[Talk:Didier Queloz| ]] --
[[Quintessence]] [[Talk:Quintessence| ]] 

==R==

[[R-process]] [[Talk:R-process| ]] --
[[R-type asteroid]] [[Talk:R-type asteroid| ]] --
[[Radial velocity]] [[Talk:Radial velocity| ]] --
[[Radiant]] [[Talk:Radiant| ]] --
[[Radiation pressure]] [[Talk:Radiation pressure| ]] --
[[Radio astronomy]] [[Talk:Radio astronomy| ]] --
[[Radio galaxy]] [[Talk:Radio galaxy| ]] --
[[Radio star]] [[Talk:Radio star| ]] --
[[Radio telescope]] [[Talk:Radio telescope| ]] --
[[Radio wave]] [[Talk:Radio wave| ]] --
[[Rainbow]] [[Talk:Rainbow| ]] --
[[Pavla Ranzinger|Ranzinger, Pavla]] [[Talk:Pavla Ranzinger| ]] --
[[Rare Earth hypothesis]] [[Talk:Rare Earth hypothesis| ]] --
[[Ras Algethi]] [[Talk:Ras Algethi| ]] --
[[Rayleigh scattering]] [[Talk:Rayleigh scattering| ]] --
[[Grote Reber|Reber, Grote]] [[Talk:Grote Reber| ]] --
[[Red clump]] [[Talk:Red clump| ]] --
[[Red dwarf star]] [[Talk:Red dwarf star| ]] --
[[Red giant]] [[Talk:Red giant| ]] --
[[Redshift]] [[Talk:Redshift| ]] --
[[Martin Rees|Rees, Martin]] [[Talk:Martin Rees| ]] --
[[Reflection]] [[Talk:Reflection| ]] --
[[Reflection nebula]] [[Talk:Reflection nebula| ]] --
[[Reflector telescope]] [[Talk:Reflector telescope| ]] --
[[Refraction]] [[Talk:Refraction| ]] --
[[Refractor telescope]] [[Talk:Refractor telescope| ]] --
[[Regiomontanus]] [[Talk:Regiomontanus| ]] --
[[Regolith]] [[Talk:Regolith| ]] --
[[Regulus]] [[Talk:Regulus| ]] --
[[Erasmus Reinhold|Reinhold, Erasmus]] [[Talk:Erasmus Reinhold| ]] --
[[Harold Reitsema|Reitsema, Harold]] [[Talk:Harold Reitsema| ]] --
[[Research Consortium on Nearby Stars]] [[Talk:Research Consortium on Nearby Stars| ]] --
[[Resolution (optics)]] [[Talk:Resolution (optics)| ]] --
[[Resolving power]] [[Talk:Resolving power| ]] --
[[Reticulum]] [[Talk:Reticulum| ]] --
[[Retrograde motion]] [[Talk:Retrograde motion| ]] --
[[Retrogade orbit]] [[Talk:Retrogade orbit| ]] --
[[Revised Julian calendar]] [[Talk:Revised Julian calendar| ]] --
[[Alastair Reynolds|Reynolds, Alastair]] [[Talk:Alastair Reynolds| ]] --
[[Rhea (moon)]] [[Talk:Rhea (moon)| ]] --
[[Georg Joachim Rheticus|Rheticus, Georg Joachim]] [[Talk:Georg Joachim Rheticus| ]] --
[[Rho Coronae Borealis]] [[Talk:Rho Coronae Borealis| ]] --
[[Rhyolite]] [[Talk:Rhyolite| ]] --
[[Riemannian geometry]] [[Talk:Riemannian geometry| ]] --
[[Rigel]] [[Talk:Rigel| ]] --
[[Right ascension]] [[Talk:Right ascension| ]] --
[[Rijl al Awwa]] [[Talk:Rijl al Awwa| ]] --
[[Rima Sirsalis]] [[Talk:Rima Sirsalis| ]] --
[[Ring current]] [[Talk:Ring current| ]] --
[[Ring galaxy]] [[Talk:Ring galaxy| ]] --
[[Ring Nebula]] [[Talk:Ring Nebula| ]] --
[[Riphaeus Mountains]] [[Talk:Riphaeus Mountains| ]] --
[[George Willis Ritchey|Ritchey, George Willis]] [[Talk:George Willis Ritchey| ]] --
[[Ritchey-Chrétien telescope]] [[Talk:Ritchey-Chrétien telescope| ]] --
[[Edward Roche|Roche, Édouard Albert]] [[Talk:Edward Roche| ]] --
[[Roche limit]] [[Talk:Roche limit| ]] --
[[Roche lobe]] [[Talk:Roche lobe| ]] --
[[Roman calendar]] [[Talk:Roman calendar| ]] --
[[Ole Romer|Römer, Ole]] [[Talk:Ole Romer| ]] --
[[Rosalind]] [[Talk:Rosalind| ]] --
[[Rosette Nebula]] [[Talk:Rosette Nebula| ]] --
[[Ross 128]] [[Talk:Ross 128| ]] --
[[Ross 154]] [[Talk:Ross 154| ]] --
[[Ross 248]] [[Talk:Ross 248| ]] --
[[Royal Astronomical Society]] [[Talk:Royal Astronomical Society| ]] --
[[Royal Greenwich Observatory]] [[Talk:Royal Greenwich Observatory| ]] --
[[Royal Society]] [[Talk:Royal Society| ]] --
[[Olaus Rudbeckius|Rudbeckius, Olaus]] [[Talk:Olaus Rudbeckius| ]] --
[[Henry Norris Russell|Russell, Henry Norris]] [[Talk:Henry Norris Russell| ]] --
[[Martin Ryle|Ryle, Martin]] [[Talk:Martin Ryle| ]]

==S==

[[S-process]] [[Talk:S-process| ]] --
[[S-type asteroid]] [[Talk:S-type asteroid| ]] --
[[Edward Sabine|Sabine, Edward]] [[Talk:Edward Sabine| ]] --
[[Carl Sagan|Sagan, Carl]] [[Talk:Carl Sagan| ]] --
[[Sagitta]] [[Talk:Sagitta| ]] --
[[Sagittarius]] [[Talk:Sagittarius| ]] --
[[Sagittarius A]] [[Talk:Sagittarius A| ]] --
[[Saiph]] [[Talk:Saiph| ]] --
[[Allan Sandage|Sandage, Allan]] [[Talk:Allan Sandage| ]] --
[[Saros]] [[Talk:Saros| ]] --
[[Satellite]] [[Talk:Satellite| ]] --
[[Saturn (planet)]] [[Talk:Saturn (planet)| ]] --
[[Saturn Nebula]] [[Talk:Saturn Nebula| ]] --
[[Henry Savile|Savile, Henry]] [[Talk:Henry Savile| ]] --
[[Savilian chair of astronomy ]] [[Talk:Savilian chair of astronomy | ]] --
[[Scalar]] [[Talk:Scalar| ]] --
[[Scattered Disk Object]] [[Talk:Scattered Disk Object| ]] --
[[Scattered disk object]] [[Talk:Scattered disk object| ]] --
[[Samuel Heinrich Schwabe|Schwabe, Samuel Heinrich]] [[Talk:Samuel Heinrich Schwabe| ]] --
[[Christoph Scheiner|Scheiner, Christoph]] [[Talk:Christoph Scheiner| ]] --
[[Bernard Schmidt|Schmidt, Bernard]] [[Talk:Bernard Schmidt| ]] --
[[Bernhard Schmidt|Schmidt, Bernhard]] [[Talk:Bernhard Schmidt| ]] --
[[Bernhard Voldomar Schmidt|Schmidt, Bernhard Voldomar]] [[Talk:Bernhard Voldomar Schmidt| ]] --
[[Schmidt camera]] [[Talk:Schmidt camera| ]] --
[[Schmidt-Cassegrain]] [[Talk:Schmidt-Cassegrain| ]] --
[[Schmidt-Cassegrain telescope]] [[Talk:Schmidt-Cassegrain telescope| ]] --
[[Maarten Schmidt|Schmidt, Maarten]] [[Talk:Maarten Schmidt| ]] --
[[Schmidt survey]] [[Talk:Schmidt survey| ]] --
[[Heinrich Schwabe|Schwabe, Heinrich]] [[Talk:Heinrich Schwabe| ]] --
[[Karl Schwarzschild|Schwarzschild, Karl]] [[Talk:Karl Schwarzschild| ]] --
[[Schwarzschild radius]] [[Talk:Schwarzschild radius| ]] --
[[Schwassmann-Wachmann-3]] [[Talk:Schwassmann-Wachmann-3| ]] --
[[Scientific journal]] [[Talk:Scientific journal| ]] --
[[Scientific paper]] [[Talk:Scientific paper| ]] --
[[Scintillation]] [[Talk:Scintillation| ]] --
[[Scorpius]] [[Talk:Scorpius| ]] --
[[Sculptor (constellation)]] [[Talk:Sculptor (constellation)| ]] --
[[Sculptor Group]] [[Talk:Sculptor Group| ]] --
[[Scutum]] [[Talk:Scutum| ]] --
[[Season]] [[Talk:Season| ]] --
[[Second]] [[Talk:Second| ]] --
[[Second of arc]] [[Talk:Second of arc| ]] --
[[Second Superstring Revolution]] [[Talk:Second Superstring Revolution| ]] --
[[Seeing]] [[Talk:Seeing| ]] --
[[Semidetached binary]] [[Talk:Semidetached binary| ]] --
[[Semimajor axis]] [[Talk:Semimajor axis| ]] --
[[Semiregular variable]] [[Talk:Semiregular variable| ]] --
[[Serpens]] [[Talk:Serpens| ]] --
[[Serrurier trusses]] [[Talk:Serrurier trusses| ]] --
[[Setebos]] [[Talk:Setebos| ]] --
[[SETI]] [[Talk:SETI| ]] --
[[Setting circle]] [[Talk:Setting circle| ]] --
[[Setting circles]] [[Talk:Setting circles| ]] --
[[Sextans]] [[Talk:Sextans| ]] --
[[Seyfert galaxy]] [[Talk:Seyfert galaxy| ]] --
[[Seyfert's Sextet]] [[Talk:Seyfert's Sextet| ]] --
[[Carl Seyfert|Seyfert, Carl Keenan]] [[Talk:Carl Seyfert| ]] --
[[Shape of the universe]] [[Talk:Shape of the universe| ]] --
[[Harlow Shapley|Shapley, Harlow]] [[Talk:Harlow Shapley| ]] --
[[Shaula]] [[Talk:Shaula| ]] --
[[Shedir]] [[Talk:Shedir| ]] --
[[Shepherd satellite]] [[Talk:Shepherd satellite| ]] --
[[Iosif Samuilovich Shklovsky|Shklovsky, Iosif Samuilovich]] [[Talk:Iosif Samuilovich Shklovsky| ]] --
[[Shock wave]] [[Talk:Shock wave| ]] --
[[Carolyn Shoemaker|Shoemaker, Carolyn]] [[Talk:Carolyn Shoemaker| ]] --
[[Eugene Shoemaker|Shoemaker, Eugene]] [[Talk:Eugene Shoemaker| ]] --
[[James Short|Short, James]] [[Talk:James Short| ]] --
[[Sidereal day]] [[Talk:Sidereal day| ]] --
[[Sidereal time]] [[Talk:Sidereal time| ]] --
[[Sidereal year]] [[Talk:Sidereal year| ]] --
[[Siding Springs Observatory]] [[Talk:Siding Springs Observatory| ]] --
[[Sinope (moon)]] [[Talk:Sinope (moon)| ]] --
[[Sirius]] [[Talk:Sirius| ]] --
[[Sirius A]] [[Talk:Sirius A| ]] --
[[Sirius B]] [[Talk:Sirius B| ]] --
[[Sirona]] [[Talk:Sirona| ]] --
[[Sirrah]] [[Talk:Sirrah| ]] --
[[Sirsalis crater]] [[Talk:Sirsalis crater| ]] --
[[Willem de Sitter|Sitter, Willem, de]] [[Talk:Willem de Sitter| ]] --
[[Sky]] [[Talk:Sky| ]] --
[[Small-angle formula]] [[Talk:Small-angle formula| ]] --
[[Francis Graham Smith|Smith, Francis Graham]] [[Talk:Francis Graham Smith| ]] --
[[Smithsonian Astrophysical Observatory]] [[Talk:Smithsonian Astrophysical Observatory| ]] --
[[William Henry Smyth|Smyth, William Henry]] [[Talk:William Henry Smyth| ]] --
[[Snell's law]] [[Talk:Snell's law| ]] --
[[Soft gamma repeater]] [[Talk:Soft gamma repeater| ]] --
[[Soft X-ray transient]] [[Talk:Soft X-ray transient| ]] --
[[SOHO]] [[Talk:SOHO| ]] --
[[Solar activity]] [[Talk:Solar activity| ]] --
[[Solar and Heliospheric Observatory]] [[Talk:Solar and Heliospheric Observatory| ]] --
[[Solar calendar]] [[Talk:Solar calendar| ]] --
[[Solar cosmic ray]] [[Talk:Solar cosmic ray| ]] --
[[Solar cycle]] [[Talk:Solar cycle| ]] --
[[Solar day]] [[Talk:Solar day| ]] --
[[Solar eclipse]] [[Talk:Solar eclipse| ]] --
[[Solar flare]] [[Talk:Solar flare| ]] --
[[Solar luminosity]] [[Talk:Solar luminosity| ]] --
[[Solar mass]] [[Talk:Solar mass| ]] --
[[Solar maximun]] [[Talk:Solar maximun| ]] --
[[Solar nebula]] [[Talk:Solar nebula| ]] --
[[Solar neutrino problem]] [[Talk:Solar neutrino problem| ]] --
[[Solar prominence]] [[Talk:Solar prominence| ]] --
[[Solar radiation]] [[Talk:Solar radiation| ]] --
[[Solar system]] [[Talk:Solar system| ]] --
[[Solar terminator line]] [[Talk:Solar terminator line| ]] --
[[Solar time]] [[Talk:Solar time| ]] --
[[Solar wind]] [[Talk:Solar wind| ]] --
[[Solar year]] [[Talk:Solar year| ]] --
[[Solstice]] [[Talk:Solstice| ]] --
[[Sombrero Galaxy]] [[Talk:Sombrero Galaxy| ]] --
[[Sonneberg Observatory]] [[Talk:Sonneberg Observatory| ]] --
[[Sothic cycle]] [[Talk:Sothic cycle| ]] --
[[Sothic period]] [[Talk:Sothic period| ]] --
[[South Pole]] [[Talk:South Pole| ]] --
[[South Pole-Aitken basin]] [[Talk:South Pole-Aitken basin| ]] --
[[Southern Pinwheel Galaxy]] [[Talk:Southern Pinwheel Galaxy| ]] --
[[Soviet revolutionary calendar]] [[Talk:Soviet revolutionary calendar| ]] --
[[Space]] [[Talk:Space| ]] --
[[Space observatory]] [[Talk:Space observatory| ]] --
[[Space science]] [[Talk:Space science| ]] --
[[Space weather]] [[Talk:Space weather| ]] --
[[Spacetime]] [[Talk:Spacetime| ]] --
[[Special relativity]] [[Talk:Special relativity| ]] --
[[Spectral density]] [[Talk:Spectral density| ]] --
[[Spectral line]] [[Talk:Spectral line| ]] --
[[Spectral type]] [[Talk:Spectral type| ]] --
[[Spectrograph]] [[Talk:Spectrograph| ]] --
[[Spectroheliograph]] [[Talk:Spectroheliograph| ]] --
[[Spectrometry]] [[Talk:Spectrometry| ]] --
[[Spectroscopy]] [[Talk:Spectroscopy| ]] --
[[Spectroscopic binary]] [[Talk:Spectroscopic binary| ]] --
[[Speed of gravity]] [[Talk:Speed of gravity| ]] --
[[Speed of light]] [[Talk:Speed of light| ]] --
[[Spherical abberation]] [[Talk:Spherical abberation| ]] --
[[Spherical coordinate system]] [[Talk:Spherical coordinate system| ]] --
[[Spherical geometry]] [[Talk:Spherical geometry| ]] --
[[Spherical triangle]] [[Talk:Spherical triangle| ]] --
[[Spica]] [[Talk:Spica| ]] --
[[Spiral arm]] [[Talk:Spiral arm| ]] --
[[Spiral galaxy]] [[Talk:Spiral galaxy| ]] --
[[Spoerer law]] [[Talk:Spoerer law| ]] --
[[Sporus of Nicaea]] [[Talk:Sporus of Nicaea| ]] --
[[Spotting scope]] [[Talk:Spotting scope| ]] --
[[Spring]] [[Talk:Spring| ]] --
[[Standard candle]] [[Talk:Standard candle| ]] --
[[Star]] [[Talk:Star| ]] --
[[Star catalogue]] [[Talk:Star catalogue| ]] --
[[Star cluster]] [[Talk:Star cluster| ]] --
[[Star designation]] [[Talk:Star designation| ]] --
[[Star formation]] [[Talk:Star formation| ]] --
[[Star party]] [[Talk:Star party| ]] --
[[Starbust galaxy]] [[Talk:Starbust galaxy| ]] --
[[Starfish galaxy]] [[Talk:Starfish galaxy| ]] --
[[Steady state theory]] [[Talk:Steady state theory| ]] --
[[Stefan-Boltzmann law]] [[Talk:Stefan-Boltzmann law| ]] --
[[Joseph Stefan|Stefan, Jožef]] [[Talk:Joseph Stefan| ]] --
[[Stellar astronomy]] [[Talk:Stellar astronomy| ]] --
[[Stellar classification]] [[Talk:Stellar classification| ]] --
[[Stellar dynamics]] [[Talk:Stellar dynamics| ]] --
[[Stellar evolution]] [[Talk:Stellar evolution| ]] --
[[Stellar nucleosynthesis]] [[Talk:Stellar nucleosynthesis| ]] --
[[Stellar nursery]] [[Talk:Stellar nursery| ]] --
[[Stellar population]] [[Talk:Stellar population| ]] --
[[Stephano]] [[Talk:Stephano| ]] --
[[Stereographic projection]] [[Talk:Stereographic projection| ]] --
[[Simon Stevin|Stevin, Simon]] [[Talk:Simon Stevin| ]] --
[[Steward Observatory]] [[Talk:Steward Observatory| ]] --
[[Strabo]] [[Talk:Strabo| ]] --
[[Strange matter]] [[Talk:Strange matter| ]] --
[[String theory]] [[Talk:String theory| ]] --
[[Janez Strnad|Strnad, Janez]] [[Talk:Janez Strnad| ]] --
[[Strong interaction]] [[Talk:Strong interaction| ]] --
[[STScI]] [[Talk:STScI| ]] --
[[Subaru (telescope)]] [[Talk:Subaru (telescope)| ]] --
[[Subdwarf]] [[Talk:Subdwarf| ]] --
[[Substellar]] [[Talk:Substellar| ]] --
[[Sudbury Neutrino Observatory]] [[Talk:Sudbury Neutrino Observatory| ]] --
[[Summer]] [[Talk:Summer| ]] --
[[Summer Solstice]] [[Talk:Summer Solstice| ]] --
[[Summer Triangle]] [[Talk:Summer Triangle| ]] --
[[Sun]] [[Talk:Sun| ]] --
[[Sun Dogs]] [[Talk:Sun Dogs| ]] --
[[Sundial]] [[Talk:Sundial| ]] --
[[Sunflower Galaxy]] [[Talk:Sunflower Galaxy| ]] --
[[Sunrise]] [[Talk:Sunrise| ]] --
[[Sunset]] [[Talk:Sunset| ]] --
[[Sunspot]] [[Talk:Sunspot| ]] --
[[Sunspot Index]] [[Talk:Sunspot Index| ]] --
[[Sunyaev-Zel'dovic-Effect]] [[Talk:Sunyaev-Zel'dovic-Effect| ]] --
[[Super jupiter]] [[Talk:Super jupiter| ]] --
[[Supercluster]] [[Talk:Supercluster| ]] --
[[Supergiant]] [[Talk:Supergiant| ]] --
[[Supergravity]] [[Talk:Supergravity| ]] --
[[Superior planet]] [[Talk:Superior planet| ]] --
[[Supermassive black hole]] [[Talk:Supermassive black hole| ]] --
[[Supernova]] [[Talk:Supernova| ]] --
[[Supernova 1604]] [[Talk:Supernova 1604| ]] --
[[Supernova 1987a]] [[Talk:Supernova 1987a| ]] --
[[Supernova nucleosynthesis]] [[Talk:Supernova nucleosynthesis| ]] --
[[Supernova remnant]] [[Talk:Supernova remnant| ]] --
[[Superstring theory]] [[Talk:Superstring theory| ]] --
[[Supersymmetry]] [[Talk:Supersymmetry| ]] --
[[Sycorax]] [[Talk:Sycorax| ]] --
[[Sycorax (moon)]] [[Talk:Sycorax (moon)| ]] --
[[Synchronous rotation]] [[Talk:Synchronous rotation| ]] --
[[Synchrotron radiation]] [[Talk:Synchrotron radiation| ]] --
[[Synodic day]] [[Talk:Synodic day| ]] --
[[Synodic month]] [[Talk:Synodic month| ]] --
[[Synodic period]] [[Talk:Synodic period| ]] --
[[Syrma]] [[Talk:Syrma| ]] --
[[Michal Szymanski|Szymanski, Michal]] [[Talk:Michal Szymanski| ]]

==T==

[[T Tauri]] [[Talk:T Tauri| ]] --
[[Table of mathematical symbols]] [[Talk:Table of mathematical symbols| ]] --
[[Taikonaut]] [[Talk:Taikonaut| ]] --
[[Naoko Takeuchi|Takeuchi, Naoko]] [[Talk:Naoko Takeuchi| ]] --
[[Tau Ceti]] [[Talk:Tau Ceti| ]] --
[[Taurus]] [[Talk:Taurus| ]] --
[[Telescope]] [[Talk:Telescope| ]] --
[[Telescope making]] [[Talk:Telescope making| ]] --
[[Telescope mount]] [[Talk:Telescope mount| ]] --
[[Telescopium]] [[Talk:Telescopium| ]] --
[[Telesto (moon)]] [[Talk:Telesto (moon)| ]] --
[[Temperature]] [[Talk:Temperature| ]] --
[[Terminator]] [[Talk:Terminator| ]] --
[[Terrae]] [[Talk:Terrae| ]] --
[[Terraforming]] [[Talk:Terraforming| ]] --
[[Terrestrial planet]] [[Talk:Terrestrial planet| ]] --
[[Terrestrial Planet Finder]] [[Talk:Terrestrial Planet Finder| ]] --
[[Terrestrial Time]] [[Talk:Terrestrial Time| ]] --
[[Tethys (moon)]] [[Talk:Tethys (moon)| ]] --
[[Thabit ibn Qurra]] [[Talk:Thabit ibn Qurra| ]] --
[[Thai lunar calendar]] [[Talk:Thai lunar calendar| ]] --
[[Thai solar calendar]] [[Talk:Thai solar calendar| ]] --
[[Thalassa]] [[Talk:Thalassa| ]] --
[[Thalassa (moon)]] [[Talk:Thalassa (moon)| ]] --
[[Thales]] [[Talk:Thales| ]] --
[[Thebe (moon)]] [[Talk:Thebe (moon)| ]] --
[[The Great Debate]] [[Talk:The Great Debate| ]] --
[[Theoretical astrophysics]] [[Talk:Theoretical astrophysics| ]] --
[[Theory of everything]] [[Talk:Theory of everything| ]] --
[[Theory of relativity]] [[Talk:Theory of relativity| ]] --
[[Christopher Thompson|Thompson, Christopher]] [[Talk:Christopher Thompson| ]] --
[[Thompson crater]] [[Talk:Thompson crater| ]] --
[[Kip Thorne|Thorne, Kip]] [[Talk:Kip Thorne| ]] --
[[Thorne-Zytkow object]] [[Talk:Thorne-Zytkow object| ]] --
[[Thuban]] [[Talk:Thuban| ]] --
[[Tidal acceleration]] [[Talk:Tidal acceleration| ]] --
[[Tidal force]] [[Talk:Tidal force| ]] --
[[Tidal locking]] [[Talk:Tidal locking| ]] --
[[Tidal resonance]] [[Talk:Tidal resonance| ]] --
[[Time]] [[Talk:Time| ]] --
[[Time travel]] [[Talk:Time travel| ]] --
[[Timeline of artificial satellites and space probes]] [[Talk:Timeline of artificial satellites and space probes| ]] --
[[Timeline of astronomical maps, catalogs, and surveys]] [[Talk:Timeline of astronomical maps, catalogs, and surveys| ]] --
[[Timeline of black hole physics]] [[Talk:Timeline of black hole physics| ]] --
[[Timeline of cosmic microwave background astronomy]] [[Talk:Timeline of cosmic microwave background astronomy| ]] --
[[Timeline of cosmology]] [[Talk:Timeline of cosmology| ]] --
[[Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure]] [[Talk:Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure| ]] --

[[Timeline of knowledge about the interstellar and intergalactic medium]] [[Talk:Timeline of knowledge about the interstellar and intergalactic medium| ]] --
[[Timeline of other background radiation fields]] [[Talk:Timeline of other background radiation fields| ]] --
[[Timeline of solar astronomy]] [[Talk:Timeline of solar astronomy| ]] --
[[Timeline of solar system astronomy]] [[Talk:Timeline of solar system astronomy| ]] --
[[Timeline of stellar astronomy]] [[Talk:Timeline of stellar astronomy| ]] --
[[Timeline of telescopes, observatories, and observing technology]] [[Talk:Timeline of telescopes, observatories, and observing technology| ]] --
[[Timeline of the Big Bang]] [[Talk:Timeline of the Big Bang| ]] --
[[Timeline of the Universe]] [[Talk:Timeline of the Universe| ]] --
[[Timeline of white dwarfs, neutron stars, and supernovae]] [[Talk:Timeline of white dwarfs, neutron stars, and supernovae| ]] --
[[Timocharis]] [[Talk:Timocharis| ]] --
[[Tip-tilt mirror]] [[Talk:Tip-tilt mirror| ]] --
[[Titan (moon)]] [[Talk:Titan (moon)| ]] --
[[Titania (moon)]] [[Talk:Titania (moon)| ]] --
[[Johann Daniel Titius|Titius, Johann Daniel]] [[Talk:Johann Daniel Titius| ]] --
[[Titius-Bode law]] [[Talk:Titius-Bode law| ]] --
[[Toledan tables]] [[Talk:Toledan tables| ]] --
[[Clyde Tombaugh|Tombaugh, Clyde]] [[Talk:Clyde Tombaugh| ]] --
[[Tonalamatl]] [[Talk:Tonalamatl| ]] --
[[Topology of the universe]] [[Talk:Topology of the universe| ]] --
[[Torino scale]] [[Talk:Torino scale| ]] --
[[Trans-Neptunian object]] [[Talk:Trans-Neptunian object| ]] --
[[Transit (astronomy)]] [[Talk:Transit (astronomy)| ]] --
[[Triangulum]] [[Talk:Triangulum| ]] --
[[Triangulum Australe]] [[Talk:Triangulum Australe| ]] --
[[Triangulum Galaxy]] [[Talk:Triangulum Galaxy| ]] --
[[Trifid Nebula]] [[Talk:Trifid Nebula| ]] --
[[Triple-alpha process]] [[Talk:Triple-alpha process| ]] --
[[Triple star]] [[Talk:Triple star| ]] --
[[Triton (moon)]] [[Talk:Triton (moon)| ]] --
[[Trojan asteroid]] [[Talk:Trojan asteroid| ]] --
[[Tropic of Cancer]] [[Talk:Tropic of Cancer| ]] --
[[Tropic of Capricorn]] [[Talk:Tropic of Capricorn| ]] --
[[Tropical year]] [[Talk:Tropical year| ]] --
[[Tucana]] [[Talk:Tucana| ]] --
[[Tully-Fisher relation]] [[Talk:Tully-Fisher relation| ]] --
[[Tunguska event]] [[Talk:Tunguska event| ]] --
[[Turbulence]] [[Talk:Turbulence| ]] --
[[Twin paradox]] [[Talk:Twin paradox| ]] --
[[Tycho]] [[Talk:Tycho| ]] --
[[Tzolkin|Tzol'kin]] [[Talk:Tzolkin| ]]

==U==

[[UBC Liquid-Mirror Observatory]] [[Talk:UBC Liquid-Mirror Observatory| ]] --
[[Andrzej Udalski|Udalski, Andrzej]] [[Talk:Andrzej Udalski| ]] --
[[UFO]] [[Talk:UFO| ]] --
[[UKIRT]] [[Talk:UKIRT| ]] --
[[Ultimate fate of the Universe]] [[Talk:Ultimate fate of the Universe| ]] --
[[Ultraviolet]] [[Talk:Ultraviolet| ]] --
[[Ulugh Beg]] [[Talk:Ulugh Beg| ]] --
[[Umbra]] [[Talk:Umbra| ]] --
[[Umbriel]] [[Talk:Umbriel| ]] --
[[Unified Theory of Active Galaxies]] [[Talk:Unified Theory of Active Galaxies| ]] --
[[United States Naval Observatory]] [[Talk:United States Naval Observatory| ]] --
[[Universal time]] [[Talk:Universal time| ]] --
[[Universal Time]] [[Talk:Universal Time| ]] --
[[Universe]] [[Talk:Universe| ]] --
[[Upper Imbrian]] [[Talk:Upper Imbrian| ]] --
[[Uppsala Astronomical Observatory]] [[Talk:Uppsala Astronomical Observatory| ]] --
[[Uppsala General Catalogue]] [[Talk:Uppsala General Catalogue| ]] --
[[Upsilon Andromedae]] [[Talk:Upsilon Andromedae| ]] --
[[Urania]] [[Talk:Urania| ]] --
[[Uraniborg]] [[Talk:Uraniborg| ]] --
[[Uranienborg]] [[Talk:Uranienborg| ]] --
[[Uranus (planet)]] [[Talk:Uranus (planet)| ]] --
[[Ursa Major]] [[Talk:Ursa Major| ]] --
[[Ursa Minor]] [[Talk:Ursa Minor| ]] --
[[UV astronomy]] [[Talk:UV astronomy| ]]


==V==

[[V-type asteroid]] [[Talk:V-type asteroid| ]] --
[[Yrjo Vaisala|Vaisala, Yrjo]] [[Talk:Yrjo Vaisala| ]] --
[[James Van Allen|Van Allen, James]] [[Talk:James Van Allen| ]] --
[[Van Allen radiation belt]] [[Talk:Van Allen radiation belt| ]] --
[[Philip Van Lansberg|Van Lansberg, Philip]] [[Talk:Philip Van Lansberg| ]] --
[[Variable star]] [[Talk:Variable star| ]] --
[[Variable star designation]] [[Talk:Variable star designation| ]] --
[[Varuna]] [[Talk:Varuna| ]] --
[[Gérard de Vaucouleurs|Vaucouleurs, Gérard de]] [[Talk:Gérard de Vaucouleurs| ]] --
[[Vega]] [[Talk:Vega| ]] --
[[Vela]] [[Talk:Vela| ]] --
[[Venus (planet)]] [[Talk:Venus (planet)| ]] --
[[Vernal equinox]] [[Talk:Vernal equinox| ]] --
[[Very Large Array]] [[Talk:Very Large Array| ]] --
[[Very Large Telescope]] [[Talk:Very Large Telescope| ]] --
[[Very Long Baseline Interferometry]] [[Talk:Very Long Baseline Interferometry| ]] --
[[Vienna Observatory]] [[Talk:Vienna Observatory| ]] --
[[Vindemiatrix]] [[Talk:Vindemiatrix| ]] --
[[Virgo]] [[Talk:Virgo| ]] --
[[Virgo A Galaxy]] [[Talk:Virgo A Galaxy| ]] --
[[Virgo cluster]] [[Talk:Virgo cluster| ]] --
[[Virgo Supercluster]] [[Talk:Virgo Supercluster| ]] --
[[Visible light]] [[Talk:Visible light| ]] --
[[Visible spectrum]] [[Talk:Visible spectrum| ]] --
[[Visual binary]] [[Talk:Visual binary| ]] --
[[Visual magnitude]] [[Talk:Visual magnitude| ]] --
[[VLBI]] [[Talk:VLBI| ]] --
[[VLT]] [[Talk:VLT| ]] --
[[VLTI]] [[Talk:VLTI| ]] --
[[VLA]] [[Talk:VLA| ]] --
[[Hermann Carl Vogel|Vogel, Hermann Carl]] [[Talk:Hermann Carl Vogel| ]] --
[[Volans]] [[Talk:Volans| ]] --
[[Vulpecula]] [[Talk:Vulpecula| ]]

==W==

[[W UMa]] [[Talk:W UMa| ]] --
[[Richard Walker|Walker, Richard]] [[Talk:Richard Walker| ]] --
[[Water maser]] [[Talk:Water maser| ]] --
[[Wavelength]] [[Talk:Wavelength| ]] --
[[Godefroy Wedelin|Wedelin, Godefroy]] [[Talk:Godefroy Wedelin| ]] --
[[Week]] [[Talk:Week| ]] --
[[Carl von Weizsäcker|Weizsäcker, Carl, von]] [[Talk:Carl von Weizsäcker| ]] --
[[Hermann Weyl|Weyl, Hermann Klaus Hugo]] [[Talk:Hermann Weyl| ]] --
[[Weyl's postulate]] [[Talk:Weyl's postulate| ]] --
[[Wezen]] [[Talk:Wezen| ]] --
[[Whirlpool Galaxy]] [[Talk:Whirlpool Galaxy| ]] --
[[White dwarf]] [[Talk:White dwarf| ]] --
[[White hole]] [[Talk:White hole| ]] --
[[Eugene Wigner|Wigner, Eugene]] [[Talk:Eugene Wigner| ]] --
[[Wien's law]] [[Talk:Wien's law| ]] --
[[Willebrord Snell|Willebrord van Roijen Snell]] [[Talk:Willebrord Snell| ]] --
[[Wilson effect]] [[Talk:Wilson effect| ]] --
[[WIMP]] [[Talk:WIMP| ]] --
[[Winter]] [[Talk:Winter| ]] --
[[Winter Solstice]] [[Talk:Winter Solstice| ]] --
[[Winter Triangle]] [[Talk:Winter Triangle| ]] --
[[Carl Wilhelm Wirtz|Wirtz, Carl Wilhelm]] [[Talk:Carl Wilhelm Wirtz| ]] --
[[Edward Witten|Witten, Edward]] [[Talk:Edward Witten| ]] --
[[WIYN Consortium]] [[Talk:WIYN Consortium| ]] --
[[WMAP]] [[Talk:WMAP| ]] --
[[Wolf 359]] [[Talk:Wolf 359| ]] --
[[Max Wolf|Wolf, Max]] [[Talk:Max Wolf| ]] --
[[Wolf Number]] [[Talk:Wolf Number| ]] --
[[Wolfe]] [[Talk:Wolfe| ]] --
[[Arnold Wolfendale|Wolfendale, Arnold]] [[Talk:Arnold Wolfendale| ]] --
[[Aleksander Wolszczan|Wolszczan, Aleksander]] [[Talk:Aleksander Wolszczan| ]] --
[[Richard van der Riet Woolley|Woolley, Richard van der Riet]] [[Talk:Richard van der Riet Woolley| ]] --
[[World calendar]] [[Talk:World calendar| ]] --
[[Christopher Wren|Wren, Christopher]] [[Talk:Christopher Wren| ]]

==X==

[[X-ray]] [[Talk:X-ray| ]] --
[[X-ray astronomy]] [[Talk:X-ray astronomy| ]] --
[[X-ray binaries]] [[Talk:X-ray binaries| ]] --
[[X-ray burster]] [[Talk:X-ray burster| ]] --
[[X-ray pulsar]] [[Talk:X-ray pulsar| ]] --
[[Franz Xaver, Baron Von Zach|Xaver, Franz, Baron von Zach]] [[Talk:Franz Xaver, Baron Von Zach| ]] --
[[Xiuhmolpilli]] [[Talk:Xiuhmolpilli| ]]

==Y==

[[Yale Bright Star Catalog]] [[Talk:Yale Bright Star Catalog| ]] --
[[Yarkovsky effect]] [[Talk:Yarkovsky effect| ]] --
[[Year]] [[Talk:Year| ]] --
[[Yerkes telescope]] [[Talk:Yerkes telescope| ]] --
[[Yerkes Observatory]] [[Talk:Yerkes Observatory| ]] --
[[Charles Augustus Young|Young, Charles Augustus]] [[Talk:Charles Augustus Young| ]]

==Z==

[[Zaniah]] [[Talk:Zaniah| ]] --
[[Zavijah]] [[Talk:Zavijah| ]] --
[[Zeeman effect]] [[Talk:Zeeman effect| ]] --
[[Pieter Zeeman|Zeeman, Pieter]] [[Talk:Pieter Zeeman| ]] --
[[Zenithal hourly rate]] [[Talk:Zenithal hourly rate| ]] --
[[Zenith]] [[Talk:Zenith| ]] --
[[Zhang Heng]] [[Talk:Zhang Heng| ]] --
[[Zodiac]] [[Talk:Zodiac| ]] --
[[Zodiacal light]] [[Talk:Zodiacal light| ]] --
[[Zoroastrian calendar]] [[Talk:Zoroastrian calendar| ]] --
[[Fritz Zwicky|Zwicky, Fritz]] [[Talk:Fritz Zwicky| ]] --
[[Anna Zytkow|Zytkow, Anna]] [[Talk:Anna Zytkow| ]] --