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View Full Version : Space/Astronomy Questions and Answers


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  1. Minimum planetary mass to be trapped on
  2. Where on the Moon will the next Moonlanding take place?
  3. Does the universe have a finite mass? How do we know?
  4. Sirius
  5. "Frozen" Stars?
  6. Retiring the Titan
  7. A Speed of Light Question
  8. A question of balance
  9. Where do all the photons go?
  10. Moon "Mascons"
  11. More Velikovskian orbital mechanics and physics insight....
  12. Mercury's Transit (formerly Murcury)
  13. what websites will be showing Mercury crossing the sun?
  14. was there a great sea in the very past on the mars?
  15. E=mc^2...what?
  16. Do photons adhere to each other?
  17. What would you need for a Venus sample return mission?
  18. Work on photons
  19. Solar winds - lack of
  20. Geometry: Is a mobius strip a torus?
  21. dichotomy of mars
  22. Need opinions on these telescope stats
  23. Asteroids that become Comets
  24. Does any theory give omega = 0.3
  25. does matter condensate out of energy to allow time to happen?
  26. Are all the photons in a certain beam always of the same wavelength?
  27. Wanted: definition of"virial"......
  28. Backwards Traveling Light
  29. Time Dilation and "c"
  30. Converging coincidences?
  31. Time dialation
  32. JIMO and Prometheus
  33. Time travel from ring lasers....
  34. NASA Ballooning Missions
  35. Magnitude of Dark Energy
  36. Time Travel, Teleportation, The Light Barrier, and Alien Life
  37. Is there "TIME" in a completlely light universe?
  38. Moon distance 4.7b years ago
  39. ISS: Mass and Orbit
  40. When the Sun becomes a red giant...
  41. Saturn's Rings
  42. Green meteor fall
  43. Correct pronunciations
  44. WARPing
  45. A Parent Generation Solar System?
  46. emiT Time
  47. Tolman Dimming
  48. Simply space
  49. What is meant by an infinite universe?
  50. What did he see?
  51. Could "dark energy" be the lessening effect of gravity?
  52. Eternity and Vacuum Fluctuations
  53. Maintenance of other space telescopes
  54. Problems with attaching new BOINC project (thread 2)
  55. If SgrA* is a super-massive black hole, how come stars can get close it?
  56. Good book, "The eternity artifact"
  57. Brane flex?
  58. What does JPL know?
  59. Red Dwarfs
  60. highest orbital eccentricity
  61. How can we define left and right to an alien life form?
  62. which rays dicay is in blackhole
  63. What are semi-major axes?
  64. Pioneer anomaly
  65. Depth of vision into a crystal clear ocean
  66. Digital Binoculars - Does this product exist?
  67. Commercial lasers-a question
  68. Black Hole Article: am I missing something?
  69. How far do you have to get away from the Sun to get it invisible for the unaided eye?
  70. Detecting Dark Matter in the Milky Way halo?
  71. If expansion, how do galaxies collide?
  72. Does light travel in straight lines.
  73. Podcast question: Measuring distances
  74. Podcast Question: Universe Age
  75. Variable stars & HR diagram
  76. If the USA hadn't existed where would the CCCP's space accomplishments?
  77. Decay of momentum in an expanding space
  78. Vacuum tubes...in space?
  79. How likely is it that the LHC will detect the Higgs particle?
  80. Mintaka (Delta Orionis)
  81. Book recommendation?
  82. Satellite Imaging Question
  83. Origins of Rotation and Revolution
  84. Flying in a hydrogen atmosphere...speculation
  85. Victoria Crater
  86. global warming will wind-up the earth's rains and winter
  87. Memory error
  88. Speed of Light
  89. Question about Critical Density equation
  90. Orbit Inclination Conversion
  91. Gravitons
  92. Minimum coordinates necessary to define motion
  93. Speed of the Earth's Terminator
  94. Value of Hubbles constant
  95. average star density versus separation
  96. Spacecraft charging / object charging
  97. Fuel constraints on relativistic travel
  98. Question on reality of premise in "When Worlds Collide"
  99. when we adjoin the stars
  100. Accounting for ice mass on launchers
  101. Can anyone help me find more info on this meteorite from thailand?, Lots of pictures.
  102. Brian Greene
  103. Bolide over AL, Nov 28, 2006 5:15pm CST
  104. Field of View
  105. Space Gas
  106. Water Ice on Mercury?
  107. Using Ancient Neutrinos to observe the early Universe
  108. If a meteroite (Do I have the right term?) the size of Texas..
  109. Question about the galactic plane
  110. Old Terms About The ISM I don't See Anymore
  111. Star formation rate in the Milky Way
  112. What is chaos?
  113. Pressure of Moving Air
  114. Why Not Speed Of Light?
  115. Shape of the Galaxy
  116. Solar probe: Predictions?
  117. Metric and geodesic fun facts.
  118. Changing a Planet's orbit
  119. Probes around planets in a row - hatricks or better?
  120. Penrose diagrams show four possibilities
  121. Why is Phobos striated?
  122. question about "visible" universe
  123. What did I saw?
  124. Negatively Charged Particles
  125. Radiation Shielding
  126. Power of a photon? Energy of a photon
  127. No Such Thing As Gravity?
  128. Dog was the very first animal into the space?
  129. Will Phobos impact Mars?
  130. Centrifugal force and satellites
  131. Dark Matter and Our Physics
  132. How do we know where the stars really are?
  133. black holes
  134. The twins paradox (again!)
  135. Sound on the water, fire in the sky
  136. an Observation on Light
  137. Is there a statistician in the house?
  138. Why are black holes called black holes?
  139. Can there be a speed faster than the speed of light???
  140. Question on radiation levels at high altitude
  141. Why are we advertising this?
  142. SETI & Jazz
  143. Effect of stopping the rotation of a planet
  144. the problem of speed in the space
  145. Definition of a Star
  146. Looking for help with gravity
  147. What is Now?
  148. Will humans or its technology reach immortality?
  149. Solar Tsunami
  150. The Life of the Sun (and other stars)
  151. Physics with... apples!
  152. Galaxies question
  153. Hypothetical planetary question
  154. Dust discs
  155. Io's current sheet
  156. What does this symbol mean? (binary star systems)
  157. Quick question on the size of the Universe
  158. Lower Wavelength Limit
  159. preparing papers
  160. What is the very large red spot on jupiters surface?
  161. of which eclipse can be seen on the mars
  162. soccer ball universe?
  163. If the Moon was closer
  164. Planck regime - GR and QM incompatibility?
  165. Gravitational potential energy of white dwarfs
  166. Is gravity instantaneous or does it travel at the speed of light?
  167. Brans-Dicke
  168. Time dialation question
  169. Dark Energy - Speed of light
  170. Traveling through space
  171. If Omega=1, why is the universe expanding?
  172. Perlmutter's accelerated expansion
  173. measuring olympus mons
  174. Why the water drop looks oval in a glass of water
  175. speed of light, acceleration, and the human body.
  176. A hot crazzy start to the solar system
  177. Star System InterChange/Integrity
  178. Overlapping energy density environments and the frequency of radiation
  179. Sagnac experiment question
  180. Is there a chance this could work?
  181. Big (bang) Theories and even Bigger ignorance.
  182. minimum number of people needed
  183. The meaning of a "Theory of Everything"
  184. Curiosity killed the cat
  185. Shuttle question
  186. Revising count through photo interpretation
  187. x-ray diffraction
  188. Satellites of Satellites
  189. Backward light
  190. Largest practical optical telescope?
  191. What are they?
  192. Meteorite question+
  193. Planet diameters and basic trig
  194. Astrology studies
  195. Relativistic jets and black holes
  196. Another Hypothetical Question
  197. Revealing Dark Matter
  198. Birth of an Island
  199. Earth sized moons?
  200. Distant probes and solar interference
  201. Largest planet?
  202. Universal Dimensions
  203. 2 Questions
  204. Neutrons are unstable; how come neutron stars are stable?
  205. Hat-p-1
  206. could Hipparchos have done this ...
  207. Electron Spin
  208. Can I go buy 50g of dark matter, fill my tank with 800Kcal of dark energy?
  209. why do most things orbit other things?
  210. global warming & waste heat
  211. What can humans stick to?
  212. Precise Astronomical New Year
  213. why do professionals use parsecs?
  214. Realistic Timescales for Travel within the Solar System
  215. How one can learn that there is sunrise and sunset outside of ISS
  216. Fusion stopping in the Sun??!!
  217. Killer Asteroid
  218. Waxing Crescent Moon of 24 Dec 2006
  219. Making solid rocket fuel
  220. Water on acomet nucleus?
  221. Black Holes and Dark Matter
  222. Epoch and Equinox
  223. Magnetic Field Lines
  224. Atmospheric O2 and N2 effects on human performance
  225. Where does the mass go in a Black Hole?
  226. Last night's shooting star?
  227. Maximum G
  228. 4dimensional space
  229. What does 'quallitative' and 'quantitative' mean?
  230. Imaginary question: the formation of sun originally formed through a comet
  231. Europa impact?
  232. Does EM truly have an infinite range?
  233. Asteroids
  234. Silly Sgr A* question
  235. Why don't space images have PGP/SHA security signatures?
  236. Curious
  237. The horizon/observable universe problem
  238. Hawking Radiation
  239. Centre of the universe
  240. What Cause's Jupiter's Stripes
  241. Mass of the solar nebula
  242. Dark matter / COSMOS
  243. Light Travel Revisited
  244. 'Geo'-synchronous orbit around an asteroid
  245. Cosmos
  246. Radiation Budget of Jovian Planet's Moons
  247. What is meant by "in-line radiation"?
  248. Black Holes, Event Horizons, and Dark Energy
  249. Red Shift / Blue Shift
  250. Chi-squared fit to scatter diagrams