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View Full Version : Space/Astronomy Questions and Answers



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