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  1. The Universe's North Pole?
  2. Extremophiles?
  3. Aviation design question
  4. Energy to mass?
  5. Light constant math formula ?
  6. Introduction
  7. Significance of lithium in solar twins
  8. Surfer TOE
  9. Highest Altitude Without Pressuresuit
  10. Curve-fitting astronomical data
  11. galaxy hitchiker
  12. Ouch!
  13. Photon's Momentum
  14. Arrangement of Neutrons and Protons in the Lithium Nucleus?
  15. Ionizer
  16. why not the simple fix... Gravity.
  17. why not the simple fix... Gravity.
  18. Garrett Lisi's E8 Lattice Unifying Theory of Everything
  19. Juneau a good aurora question?
  20. Where would Apollo 13 be today if crew had died?
  21. Introductions forum
  22. Energy Density more than Lambda
  23. Galaxies
  24. Space-related Insurance Policies
  25. Why might Iapetus' leading hemisphere be dark?
  26. moon's rocks are soft or thick like our earth's rocks?
  27. Sunspot color
  28. Rest mass
  29. The Invasion of Mars
  30. What surprises would a gravity particle have w/ it?
  31. RA-Declination --> Sgr A*-oriented X/Y/Z coordinates
  32. Space elevators
  33. Synchrotron radiation from comets?
  34. Query on the Moon/Earth and the orbits of Mercury, Venus and Mars
  35. Gas Temperature on a Blackhole
  36. I smell a rat, do you?
  37. If we're all alone
  38. Software which runs satellite and rockets
  39. Nasa 5.0
  40. About the electromagnetism
  41. Moon question
  42. Question on the idea of outer space
  43. Where are the others ?
  44. Feeding Black Hole
  45. (Moons of Moons) Someone had to have asked this
  46. very bright star in the halo of the moon?
  47. If our sun going to become a white dwarf
  48. What does the universe look like?
  49. Build a satellite in your backyard
  50. Age of 26 Draconis ?
  51. Lifespan of Platetectonics?
  52. Cars running on water?
  53. If humanity was suddenly killed
  54. Rotation of objects in the universe
  55. Aviation question on gasoline octane
  56. Parallel Universes
  57. How to build a solar sail; easy...?
  58. Twinkle twinkle
  59. ISS leak visible from the outside??
  60. Has Spitzer looked at Alpha Centauri?
  61. Escape velocity.
  62. Variable Stars
  63. Has anyone ever observed a lunar asteroi/meteor strike?
  64. Origin of the Big Bang
  65. Special Relativity
  66. Casimir demonstration?
  67. North of Orion tonight
  68. where did it all start
  69. Parallel dimensions?
  70. square root of a negative number
  71. Saturn and "pinging noises"
  72. Entangled photons and wave-particle duality
  73. supersonic velocity in space
  74. cataclysm!, d.s. allan, j.b. delair
  75. Dumb question w.r.t Mathematics and Nature
  76. How do you clean a Quartz Window?
  77. Introduction Forum (I think?)
  78. the density of atoms in space
  79. Light Inside a Black Hole
  80. A question about gravitational energy and its role in an accelerating universe
  81. Photon Wavelength
  82. I have a question on sun
  83. Thought excersize seems to break the speed of light?
  84. Why So Perfect???
  85. Need Major Help On A Couple ?'s-please Respond
  86. Star viewing software or website?
  87. Surface of Saturn
  88. Neptune
  89. Numerical Integration
  90. Forming Heavier Planets
  91. 3% of the universe?
  92. Astronomy Colleges
  93. Gas Clouds in Space
  94. Radiation pressure
  95. Transmutation: us vs supernovas
  96. Bose-Einstein condensate
  97. Another BB question
  98. Can Ions have temperature?
  99. Dark Stars?
  100. Can temperature go up and down infinitely, or is there a limit?
  101. Does the energy expended by the moon vary?
  102. The End of the Universe
  103. Just saw something strange
  104. Thought provoking question- who can answer?
  105. Geminid
  106. Extra Solar North/South
  107. Does this qualify as an electrical current flow?
  108. Spinning round planets, using planets as slingshots and crashing into a planet...
  109. Is thermal energy re-transmitted in the same buckets?
  110. it couldnt ever fall because it would be all around the world????
  111. Apollo TV cameras
  112. Unknown LEO space machines
  113. Astronomers find a new halo for the Milky Way
  114. Regarding the Mechanics of Photon Absorption/Emission
  115. How Does Acceleration Affect Orbit?
  116. Black Holes question
  117. A relative speed of light problem?
  118. About traveling at the speed of light in a car with the headlights on...
  119. About traveling at the speed of light in a car with the headlights on...
  120. Correlation functions and power spectra
  121. Blinking Satellite?
  122. Is this correct and can the area be found?
  123. Gravety wave strong enough to be infinit
  124. Galactic frames of reference
  125. Has anyone read this paper?
  126. Magnetic ropes and knots
  127. Smokestack turbines
  128. Need to calculate planetary positions in the future
  129. Two questions about the salt in the sea, and the comets which brought us water.
  130. Expansion Vs Crunch
  131. cosmic microwave background radiation
  132. What is the local effect of Lambda/DE on orbits?
  133. ?...
  134. Questions my small brain can't deal with:-)
  135. How far is far enough?
  136. This one should be easy... I hope
  137. Earliest sunset
  138. Gilese 581 d landing/taking off?
  139. How much heat does it take to make a (neon tube) plasma?
  140. Europa's surface temperature
  141. Sun/moon viewer
  142. Gas planets, why no surface?
  143. Auroras and substorms
  144. Gravitational mass = Inertial Mass?
  145. Angular diameter
  146. GRB Orphan
  147. Position from theta & rho
  148. homemade observatories
  149. A Question About Orbits.
  150. Keeping Neptune in orbit
  151. A Light Question More For Photographers Than Physicists
  152. Black Hole Explanation
  153. The shape of a black hole
  154. White Holes the other end of a black hole?
  155. Mass and speed.
  156. Where to Read Up
  157. Giving New Horizons a bomb
  158. The Asteroid that May Hit Mars
  159. What caused the water to apear on Earth?
  160. So does universe infenate?
  161. Solar system graphics.
  162. What is the point of other planets?
  163. Can you join 3D space at random points, without a wormhole?
  164. Bound vs. unbound electrons
  165. Antimatter Physics
  166. Maximum planets in a solar system?
  167. Visible Universe
  168. What's the maximum size a planet can get?
  169. Saturn
  170. How did the Big Bang manage to...bang out?
  171. Need material on earth mass decreasing.
  172. Black holes...
  173. Supernova video?
  174. Speed of Light Q's
  175. The double split experiment: How do they know that the one particle is in two...
  176. Spin Time
  177. Yet two more questions about "Time"
  178. Apollo landing sites erased?
  179. Hot Jupiters
  180. The Terraforming of Mars
  181. Orbiting with one pole facing away from the sun
  182. Planet FYZ
  183. 96% of the universe is missing, or is there Variable Gravity?
  184. satellite on sun-synchronous polar orbit
  185. Quark particles
  186. Sooo ... how old is this place???
  187. Software for astro calculations
  188. Why does Venus rotate differently
  189. Effects of Heat in Space minus any Gravity
  190. Do black holes have an absorbtion rate?
  191. Dot-matrix message visible from ISS/Shuttle?
  192. Source of heat inside Enceladus?
  193. Halo over Devil's Head
  194. Streams of Matter in Interstellar Space
  195. Questions about the LEM's camera during touch-downs
  196. Where's Io's water?
  197. Magrail launcher cost and completion estimates?
  198. Question about the Safety of the Large Hadron Collider
  199. Perihel of Earth in 2008?
  200. How does gravity work?
  201. How much mass can a cubic meter have?
  202. Preons
  203. Weird light
  204. Quadrantid Meteor Shower
  205. Never Dark
  206. Cosmic baryons, BB nucleogenesis problem
  207. Time Dilation, Perhaps not the Same Old
  208. Weightlessness Question
  209. Tetons Meteor
  210. What's going on out there?
  211. Equivalence Principle/relationship between gravitational and inertial masses
  212. Vanishing Stars
  213. Dark Matter and Strings, two widely accepted theories that cancel eachother out?
  214. How Solid is String Theory?
  215. A nuclear trivia question
  216. Buying Meteroites
  217. What were these shining lights in the sky?
  218. Shuttle (de)orbit calculation question
  219. Earth Tides and Earthquakes
  220. How does size affect gravity?
  221. If there were no humans
  222. Can Radar be used to determine Sun's distance if it's not a solid mass?
  223. Hit the brakes or the Accelerator!... Make up your mind!
  224. Questions about approaching the speed of light
  225. This is probably stupid but... universe expansion acceleration.
  226. Saw a UFO
  227. Solar radiation pressure measurement from earth's surface
  228. Periphelion
  229. Solar Storms
  230. Aviation history question on in-the-wing engines
  231. How do multilple particle waves interact?
  232. Is this description of a Black Hole correct?
  233. Big Bang Reasoning
  234. Asteroid TU24 close?
  235. LHC vs SSC
  236. The night before Tunguska, 1908
  237. Non-Euclidean Geometry
  238. Would you turn into a black hole if...
  239. Why Is The Speed of Light the Fastest Anything Can go?
  240. Q & A: Using a superfluid to slow light
  241. Rows of three objects
  242. Could space expand faster than the 'space distance' between matter.
  243. interstellar dust
  244. Comet Holmes orbit paramters
  245. Transit Of Venus
  246. Galaxy formation
  247. Magnetospheric plasma propusion
  248. UFO Sighting: Help me to identify this! (PHOTOS!)
  249. Looking for thread on BRI.
  250. What would happen if 1 of the forces vanished