IVOAT Thesaurus

  1. S USE sulfur
  2. S Doradus star
  3. S galaxy
  4. s process USE s-process
  5. S star
  6. S Vulpeculae star
  7. s-process
  8. S.C.P. USE South Celestial Pole
  9. S.E.P. USE South Ecliptic Pole
  10. S.G.P. USE South Galactic Pole
  11. S.T. USE sidereal time
  12. S0 galaxy USE lenticular galaxy
  13. Saha equation
  14. samarium
  15. sampling
  16. Saros cycle
  17. satellite
  18. satellite borne instrument USE satellite-borne instrument
  19. satellite laser ranging
  20. satellite-borne instrument
  21. Saturn
  22. Sb USE antimony
  23. SBF USE SBF distance
  24. SBF distance
  25. Sc USE scandium
  26. scale height
  27. scandium
  28. scattering
  29. Schmidt camera
  30. Schmidt telescope
  31. Schoenberg-Chandrasekhar limit USE Chandrasekhar-Schoenberg limit
  32. Schonberg-Chandrasekhar limit USE Chandrasekhar-Schoenberg limit
  33. Schwarzschild metric
  34. Schwarzschild radius
  35. scientific field
  36. scintillation
  37. scintillation counter
  38. SCP USE South Celestial Pole
  39. SDSS photometry USE Sloan photometry
  40. Se USE selenium
  41. Se star USE S star
  42. seaborgium
  43. search for extraterrestrial life
  44. season
  45. seasonal phenomena
  46. secondary cosmic ray
  47. secondary mirror
  48. secondary star
  49. secular parallax
  50. seeing
  51. seeing monitor
  52. segmented optics
  53. seismology
  54. selection effect
  55. selective absorption
  56. selenium
  57. selenology
  58. self absorption USE self-absorption
  59. self calibration method USE self-calibration method
  60. self-absorption
  61. self-calibration method
  62. semi-barium star
  63. semi-detached binary star
  64. semi-major axis USE semimajor axis
  65. semi-minor axis USE semiminor axis
  66. semi-regular variable star
  67. semibarium star USE semi-barium star
  68. semiconductor device
  69. semidetached binary star USE semi-detached binary star
  70. semimajor axis
  71. semiminor axis
  72. semiregular variable star USE semi-regular variable star
  73. sensitivity
  74. sensitometer
  75. SEP USE South Ecliptic Pole
  76. separation
  77. SETI USE search for extraterrestrial life
  78. sextant
  79. Seyfert galaxy
  80. Seyfert nucleus
  81. Sg USE seaborgium
  82. SGP USE South Galactic Pole
  83. shadow band
  84. shaped reflector
  85. shell
  86. shell burning
  87. shell star
  88. shepherd satellite
  89. shock
  90. shock wave
  91. short period variable star
  92. shot noise
  93. shutter
  94. Si USE silicon
  95. sidelobe
  96. sidereal time
  97. siderostat
  98. sigma8
  99. sigma_8 USE sigma8
  100. signal analysis
  101. signal detection
  102. signal processing
  103. signal to noise ratio USE signal-to-noise ratio
  104. signal-to-noise ratio
  105. silicon
  106. silicon burning
  107. silicon monoxide
  108. silicon star
  109. silver
  110. silver coating
  111. simulation
  112. singularity
  113. SiO USE silicon monoxide
  114. SiO maser
  115. site protection
  116. site testing
  117. sky
  118. sky brightness
  119. sky noise
  120. sky radiation USE atmospheric radiation
  121. sky survey
  122. slit USE spectrograph slit
  123. slit mask
  124. Sloan photometry
  125. slow nova
  126. Sm USE samarium
  127. Small Magellanic Cloud
  128. SMC USE Small Magellanic Cloud
  129. smoothed-particle hydrodynamics USE SPH simulation
  130. SN USE supernova
  131. Sn USE tin
  132. SNR USE supernova remnant
  133. SNR USE signal-to-noise ratio
  134. sodium
  135. soft gamma-ray repeater
  136. solar
  137. solar activity
  138. solar atmosphere
  139. solar constant
  140. solar corona
  141. solar cycle
  142. solar day
  143. solar eclipse
  144. solar filament
  145. solar interior
  146. solar motion
  147. solar nebula
  148. solar neutrino problem
  149. solar observatory
  150. solar optical telescope
  151. solar oscillation
  152. solar parallax
  153. solar physics
  154. solar planetary relation USE solar-planetary relation
  155. solar radio telescope
  156. solar seismology USE helioseismology
  157. solar storm
  158. solar surface
  159. Solar System
  160. solar telescope
  161. solar terrestiral relation USE solar-terrestrial relation
  162. solar wind
  163. solar-planetary relation
  164. solar-terrestrial relation
  165. solstice
  166. sound USE acoustic wave
  167. sound speed
  168. sound wave USE acoustic wave
  169. source
  170. South Celestial Pole
  171. South Ecliptic Pole
  172. South Galactic Pole
  173. southern hemisphere
  174. space
  175. space astrometry
  176. space astronomy
  177. space biology
  178. space debris
  179. space exploration
  180. space geodesy
  181. space law
  182. space motion
  183. space observatory
  184. space pollution
  185. space probe
  186. space probe instrument
  187. space research
  188. space science USE space research
  189. space telescope
  190. space vehicle
  191. space-time curvature
  192. space-time singularity
  193. special theory of relativity
  194. specific gravity USE density
  195. specific intensity USE intensity
  196. speckle
  197. speckle interferometry
  198. spectral analysis USE spectroscopic analysis
  199. spectral band
  200. spectral classification