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  1. Longer Solar Cycles?
  2. mass-radius relationship and atmospheres
  3. why is the speed of light the speed of light?
  4. Where is anti-matter of the universe?
  5. How are gas giants formed?
  6. Gravitomagnetism
  7. Death of The universe!
  8. Anti-matter Milky Way
  9. White Dwarfs, Neutron Stars, and Black Holes
  10. "the more i learn the less i know"
  11. Black hole mass, radius
  12. Questions;
  13. Relativity and Electronics
  14. Astro Photography
  15. Universe growing?
  16. Conversion of Venus' Atmosphere
  17. the age of light?
  18. Van De Graaff Generator and other projects
  19. Verneshots
  20. unanswered questions
  21. electron volts as mass
  22. Light VS. Transparent Matter
  23. Inertial Mass
  24. magnetism on mars
  25. Project help
  26. Numbers
  27. Sol
  28. Escape Velocities
  29. Galaxy's Redshift
  30. A Question on Gravity
  31. Universal grammar
  32. Flow Of Time
  33. The Sun and the end of stars.
  34. Change in speed of light
  35. Relativistic Gravity
  36. Artificial gravity
  37. Question: Why/how does fusion yield energy?
  38. Elementary properties?
  39. Why save the HST?
  40. Dark matter.
  41. Local Novae
  42. How fast....
  43. I need help with research on a book
  44. Physics and Space
  45. Flat exploded nebulas?
  46. Centrifugal force in space
  47. Ion drive in detail
  48. Titan's Lone Continent?
  49. atmosphere questions
  50. Gravity
  51. Star Trek Actually
  52. slingshot effect
  53. Two magnetic axes?
  54. Solar Flare Cycle
  55. Boxing Day Earthquake and the Earth's Axis
  56. Asteroid 2004 MN4 in 2029
  57. Big Freeze & Heat Death
  58. What happened to mean temperature?
  59. expansion
  60. Speed of Gravity
  61. Resolving below an instruments limits.
  62. A and F stars
  63. What is a soliton
  64. Mistake in optics lecture
  65. In The Heath Death Scenario
  66. Why have different sexes?
  67. Diffusive Shock Acceleration
  68. The universe's expansion is accellerating?
  69. How bright is the Milky Way at night?
  70. meteorite falls during holocene
  71. Quick magnetism question
  72. So the universe will eventually...
  73. Question about math?
  74. HII images
  75. dangeruos phenomenon
  76. Feynman mistake?
  77. States of Matter
  78. Could Space Itself Dissipate Into Nothing
  79. Why is the Space Shuttle safer now?
  80. Earth accelerating
  81. Heat Level
  82. Strange meteor
  83. I need help
  84. Light and gravity
  85. Looking at the Big Bang
  86. Universe came from some kind of quantum field?
  87. Dark matter and black holes
  88. Blazars - How much total mass?
  89. Black Holes
  90. Mars
  91. Mass proportion
  92. Dark Matter
  93. Why is Uranus on its side?
  94. Spider webs in zero gravity...
  95. about the andromeda
  96. The Sun as a star
  97. structure of heavenly bodies
  98. What is a partial quark star?
  99. The implications of a GUT?
  100. Olbers's Paradox
  101. Water Testing
  102. Whats a PM?
  103. Gravity
  104. Point where gravity of to orbiting bodies cancel
  105. Superbolide?
  106. Zoom Factor
  107. Hawaii?
  108. about sun
  109. What is space
  110. Existence after death
  111. Sunrise and Sunset
  112. Weird Neighbors
  113. worm holes
  114. Planetary effect on Earth
  115. revolution and rotation
  116. Is our universe really rare?
  117. What would happen to an object if it could
  118. Was the big bang unique?
  119. What's the Ratio man?
  120. Quantum Gravity
  121. Loop theory
  122. The world circler
  123. Zero Point Energy
  124. cosmogony
  125. Can a Gravitational Lens Amplify Gravity?
  126. What is the structure of the universe?
  127. Can a moon have moons?
  128. Detection of dark objects
  129. Collapsing universe
  130. Shape of energy
  131. Insignificance
  132. Galaxy Formation
  133. speed of light
  134. K effect and Intrinsic redshift
  135. Microbiology & oxygen
  136. State of Fear
  137. Photon Entanglement
  138. Balloons for space exploration?
  139. black in the moon
  140. Gravity
  141. blackholes
  142. Entering space by plane
  143. Speed of light?
  144. Speed of light?
  145. Quick Question
  146. space rubish
  147. Have energy input from sun been measured?
  148. Stupid question about titan...
  149. Reflection
  150. Exoplanets
  151. Dumb it Down - Dark Matter
  152. Polar Coordinates and Electron Shells
  153. Antimatter
  154. the marvellous
  155. Carbon planets
  156. formation of all planets
  157. Little brains
  158. Is there a "center" to the universe?
  159. sun elements
  160. Rain the wonder
  161. Satellites in orbit
  162. Interstellar Travel
  163. Gama ray Question (Orion)
  164. MY THEORY
  165. twinkling stars
  166. Signs of Life
  167. The Nature of Plasmas
  168. persistance of other galaxy
  169. What's Proof?
  170. Are the gas giants becoming stars?
  171. A-level Physics Revision Help
  172. Annihilation Question ( Particle-Antiparticle )
  173. Speed of Light
  174. Creating a Magnetic Beam
  175. Project Ideas
  176. Binding energy of gravity
  177. Single land mass
  178. DARK MATTER
  179. Faster than C
  180. Particles or Waves
  181. how old is the universe really?
  182. Ununpentium
  183. Quick question
  184. Black Hole
  185. Space-Time
  186. Quantas and Bohr's atomic model
  187. "Scientific erosion"?
  188. outer edge of the universe
  189. magnetic poles
  190. What do you do if....
  191. Extraterrestrial influence on life on earth
  192. How old is the universe?
  193. Physics
  194. Is our kind of solar system rare?
  195. TRACE THEORY
  196. Redshift
  197. Do Green Houses Really Work?
  198. Neutron Stars
  199. Question about multibody systems
  200. Alpha decay
  201. Viewing the Universe from afar (very afar!)
  202. Electroweak Theory
  203. QUASARS
  204. the sun is in motion around....?
  205. Is the Universe spinning?
  206. Expansion vs contraction
  207. space flights by virgin airways !
  208. About that first moon 'footprint'
  209. identify a visually observed satellite
  210. Chinese asterisms and constellations
  211. 2 Questions for all the Moderators
  212. Outpour of protons from Sun
  213. Orion cloud.
  214. Earths Core
  215. What's important to scientists today?
  216. Anti-neutron device
  217. For Student
  218. Arg! those confusing star names!
  219. Strange object in sky
  220. Extreme terraforming?
  221. Laser Interferometer Space Antenna -- LISA
  222. Magnetic Flip
  223. Infinite Light?
  224. Seeing Atoms
  225. hit by Cosmic radiation
  226. sun is not hiring any energy from the rest univers
  227. The speed of light (giving me a headache)
  228. Light Years
  229. Teaching Astronomy
  230. The moon's angular acceleration
  231. Could a black hole swallow Earth?
  232. Friction Question
  233. Swarzchild radius
  234. Binoculars
  235. what effects would it have?
  236. Through the center of the earth.
  237. Venus surface temperatures
  238. Could a toroidal planet be stable?
  239. Gas Giants
  240. Black holes simplified.
  241. Width of Fraunhofer Lines
  242. Why there is no common infrastructure of planets
  243. Modeling and Determinism
  244. Why is c constant?
  245. The Barycentre of the solar system
  246. Why?
  247. Electrons moving towards the Sun
  248. Portable Nuclear Reactor
  249. About Saturn
  250. Aeroplanes