Unified Astronomy Thesaurus

  1. P branes USE P-branes
  2. P Cygni stars USE S Doradus stars
  3. P magnitude
  4. P-branes
  5. P-process
  6. Pair of galaxies USE Galaxy pairs
  7. Parabolic orbit
  8. Parallax
  9. Parallax second USE Parsec
  10. Parsec
  11. Partial eclipses
  12. Particle accretion USE Accretion
  13. Particle astrophysics USE Astroparticle physics
  14. Past light cones
  15. Past light-cones USE Past light cones
  16. Past null cones USE Past light cones
  17. Peculiar a stars USE Ap stars
  18. Peculiar galaxies
  19. Peculiar giants
  20. Peculiar objects
  21. Peculiar stars
  22. Peculiar variable stars
  23. Pegasean planets USE Hot Jupiters
  24. Pegasids USE Hot Jupiters
  25. Penrose limit
  26. Penrose mechanism USE Penrose process
  27. Penrose process
  28. Penumbra
  29. Penumbral filaments
  30. Penumbras USE Penumbra
  31. Periapsis
  32. Periastron
  33. Pericenter USE Periapsis
  34. Perigee
  35. Perihelion
  36. Period determination
  37. Period variation USE Variable star period change
  38. Period-change USE Variable star period change
  39. Periodic comets
  40. Periodic orbit
  41. Periodic variable stars
  42. Periodically variable USE Variable star period change
  43. Periodically-variable USE Variable star period change
  44. Perturbation methods
  45. Perturbation theory USE Perturbation methods
  46. PG 1159 stars
  47. Pg 1159-35 stars USE PG 1159 stars
  48. Phase angle
  49. Phase defect
  50. Phase effect
  51. Phase error
  52. Phase moon USE Lunar phase
  53. Phase shifting interferometry USE Optical phase shifting interferometry
  54. Phase switching
  55. Phase-shifting interferometry USE Optical phase shifting interferometry
  56. Philosophy of astronomy
  57. Phobos USE Martian satellites
  58. Photoelectric magnitude
  59. Photoelectric photometry
  60. Photogrammetry
  61. Photographic astrometry
  62. Photographic magnitude
  63. Photographic photometry
  64. Photographic zenith tube USE Zenith tubes
  65. Photoheliographs
  66. Photometric binary stars USE Ellipsoidal variable stars
  67. Photometric binary stars USE Eclipsing binary stars
  68. Photometric parallax
  69. Photometric standard stars
  70. Photometric systems
  71. Photometric variability USE Radiation variability
  72. Photometry
  73. Photon decoupling
  74. Photon sphere
  75. Photosphere
  76. Photospheres
  77. Photovisual magnitude
  78. Physical cosmology USE Cosmology
  79. Physical libration USE Libration
  80. Physics of stars USE Stellar physics
  81. Pick-up ions USE Pickup ions
  82. Pickup ions
  83. Plages
  84. Planet Earth USE Earth (planet)
  85. Planet formation
  86. Planet satellites USE Natural satellites
  87. Planetary alignment
  88. Planetary atmospheres
  89. Planetary boundary layers
  90. Planetary bow shocks
  91. Planetary cores
  92. Planetary interior
  93. Planetary microlensing
  94. Planetary nebula nuclei USE Planetary nebulae nuclei
  95. Planetary nebulae
  96. Planetary nebulae nuclei
  97. Planetary polar regions
  98. Planetary probes
  99. Planetary ring divisions
  100. Planetary rings
  101. Planetary satellites USE Natural satellites
  102. Planetary science
  103. Planetary structure
  104. Planetary system formation
  105. Planetary theory
  106. Planetesimals
  107. Planetology USE Planetary science
  108. Planets
  109. Plasma astrophysics
  110. Plasma clouds
  111. Plasma jets
  112. Plasmapause
  113. Plate tectonics
  114. Plutinos
  115. Pluto
  116. Plutoids
  117. PMS objects USE Pre-main sequence stars
  118. PMS stars USE Pre-main sequence stars
  119. Pogson scale
  120. Pogson's scale USE Pogson scale
  121. Pointing accuracy
  122. Pointing error
  123. Polar caps
  124. Polar ice caps USE Polar caps
  125. Polar icecaps USE Polar caps
  126. Polar jets
  127. Polar orbit
  128. Polar tides
  129. Polarimeters
  130. Polarimetric instrumentation USE Polarimeters
  131. Polarimetric instruments USE Polarimeters
  132. Polarimetry
  133. Polars USE AM Herculis stars
  134. Polytropes
  135. Polytropic solutions USE Polytropes
  136. Polytropic stars USE Polytropes
  137. Population I stars
  138. Population II Cepheid stars
  139. Population II stars
  140. Population III stars
  141. Position angle
  142. Positional astronomy
  143. Post main sequence stars USE Post-main sequence stars
  144. Post-AGB USE Post-asymptotic giant branch
  145. Post-AGB stars USE Protoplanetary nebulae
  146. Post-asymptotic giant branch
  147. Post-main sequence stars
  148. pp waves
  149. pp-wave USE pp waves
  150. pp-wave spacetimes USE pp waves
  151. Pre main sequence objects USE Pre-main sequence stars
  152. Pre-galactic stars
  153. Pre-main sequence objects USE Pre-main sequence stars
  154. Pre-main sequence stars
  155. Pre-solar nebulae
  156. Pregalactic stars USE Pre-galactic stars
  157. Prenova USE Nova progenitors
  158. Preon stars
  159. Preplanetary nebulae USE Protoplanetary nebulae
  160. Presolar nebula USE Pre-solar nebulae
  161. Presupernova USE Supernova progenitors
  162. Primary cosmic ray USE Cosmic rays
  163. Primary stars
  164. Primordial black holes
  165. Primordial fireball
  166. Primordial galaxies
  167. Primordial magnetic fields
  168. Probe USE Space probes
  169. Prolonged sunspot minimum USE Maunder minimum
  170. Prominence USE Solar prominences
  171. Proper motions
  172. Proplyd USE Protoplanetary disks
  173. Protoclusters
  174. Protogalaxies
  175. Proton proton cycle USE Proton-proton reaction
  176. Proton proton reaction USE Proton-proton reaction
  177. Proton-proton cycle USE Proton-proton reaction
  178. Proton-proton reaction
  179. Protoplanetary disks
  180. Protoplanetary nebula USE Protoplanetary nebulae
  181. Protoplanetary nebulae
  182. Protoplanets
  183. Protostars
  184. Ptolemy stones
  185. Pulsar planets
  186. Pulsars
  187. Pulsating variable stars
  188. Pulsation modes
  189. Purkinje effect
  190. Purkinje shift USE Purkinje effect
  191. PV Telescopii USE PV Telescopii variables
  192. PV Telescopii variables
  193. PZT USE Zenith tubes