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  1. How would the universe be different if π = 3?
  2. Titanic Vortex
  3. Solar system diagram
  4. Amateur astronomy
  5. If Black Holes are rips in space..
  6. Do galaxies obey newtons law?
  7. Why is the Big Bang Theory better than Steady State?
  8. Acceleration due to gravity in a galaxy
  9. Why would the uniform Expansion of space produce redshift?
  10. Questions About Galactic Collisions.
  11. Is the universe limited or infinite exactly?
  12. How to calculate orbit speed
  13. galaxies, disks & spirals
  14. Question regarding nuclear fusion in a star
  15. Summer Solstice.
  16. Curiosity on Mars
  17. Does the Oort Cloud protect us somewhat from gamma ray bursts?
  18. The universe that existed before the Big Bang?
  19. Singularities and in-escapability
  20. Sunrise Summer Solstice, Sunrise Winter Solstice.
  21. Is the HUDF the center of Our Universe?
  22. Destruction of Planetary Bodies During Stellar Expansion
  23. Proposal for a New Theory About Extraterrestrial Intelligence! Seriously!
  24. About Multiverse and String Theory
  25. In our Milky Way, looking through that plane of our Galaxy, why isn't it warmer?
  26. Is there a Long Peroid Comet heading our way?
  27. Found that an Zhou Jian’s law based on the observations of the supernova Hubble diagram
  28. zhou jian Star Charts
  29. Eclipse*
  30. Do Receding Galaxies ultimately escape gravitational influence from other bodies?
  31. Cometary Orbital Paths
  32. Can merely being outside during the transit of Venus damage your eyes?
  33. Venus Transit of the Sun Tomorrow, 6th June, 2012.
  34. NASA gets two military spy telescopes for astronomy
  35. Earth-Moon Barycentre
  36. Let us with analytical cosmology to study wide-field view of the Coma Galaxy Cluster
  37. Andromeda collision & the expansion of space
  38. could m13 be thought of as almost a small galaxy
  39. Detecting a spaceship with today's sensor tech?
  40. Planetary Science questions - Building a fictitious world
  41. Making Earth 2
  42. Cosmonaut Suits: Space Radiation vs Chernobyl
  43. Ruby Payne-Scott. Astronomer and Physicist.
  44. Can a earth mass planet have a much heavier atmosphere?
  45. CMB in the past
  46. Lets Slice our Galaxy in half on the Horizontal Plane.
  47. Discrepancy between age and size universe?
  48. Our Universe Exposes Itself.
  49. what is a WORMHOLE ?
  50. mechanics
  51. Annular Solar Eclipse for Japan and Western US today
  52. The Sun's Axis
  53. Transit of Venus 06-06-2012 : visibility
  54. Spaceless Matter
  55. Dyson Sphere Solar system, And Planets?
  56. A more massive earth?
  57. The Moon closest to planet earth yesterday? Sunday/Monday 6th/7th May, 2012.
  58. Observe the venus transit!
  59. If a Star falls into a Black hole
  60. The Asteroid belt
  61. What if, A Black Hole was absorbed by a massive star?
  62. What if, Earth was orbiting a Gas Giant closer to the Sun?
  63. Could Neutrinos be causing expansion in the Universe
  64. Planetary resources
  65. Britain sent up its first satellite 50 years ago
  66. Space Blimp
  67. Where is the "Dark Matter" in the Milky Way?
  68. Faster Than the Speed Of Light?
  69. Bigcrunch theory again, help me understand why scientists believe the universe is finite.
  70. Composition of Stars
  71. Habitable planet formation
  72. why eclipses aint like this?
  73. how they do this:stereoscopic galaxy
  74. Space Craft Propulsion
  75. Our Cosmos, 14/15 billion years old?
  76. Cosmos Deployment. Random confusion or necessary construction?
  77. Is space itself really expanding?
  78. Many Planets outside the solar system?
  79. Lagrange's planetary equations
  80. Can a planet have seasons somewhat like Game of Thrones?
  81. What 'area' is the sky of the earth?
  82. Gravity
  83. If the observable universe?
  84. Suns commit suicide. Why.
  85. Iceball Planets
  86. Planet Venus, retrogard rotation, why?
  87. Neil Degrasse Tyson is awesome
  88. 3D model of solar system, new version
  89. How long will this universe last?
  90. Universal Warming
  91. what is the best method of observing the up coming transit of venus at home?
  92. Any explanations on this ?
  93. Modern science at its lowest.
  94. Expansion Festival: Does Light decay and what about black holes?
  95. Defect of illumination of Mars
  96. THE UNIVERSE: And then there was light….
  97. What will happen if the sun suddenly goes out?
  98. Is the Moon black?
  99. Dark energy - Accelerating expansion of the universe due to negative mass
  100. Europa Jupiter's Ice Moon Vs 2 miles of Antarctic ice
  101. What is the Holy Grail for Astronomy?
  102. the various dimensions
  103. More dumb questions
  104. Does gravity cast a shadow?
  105. Space Balloon- your input on the outcome!
  106. Clear Sky Chart Service - A Wonderful Weather Service For Amateur Astronomers.
  107. List of University Level Textbooks For Astronomy Major
  108. Dyson sphere or rotating habitat?
  109. do we know if the earth has ever been hit by a gamma ray burst
  110. Should we give up the search for intelligent life in the universe?
  111. how are there mountains in the middle of impact craters on the moon
  112. question about sun angle
  113. Are photons really massless?
  114. Mars Colony Toilet: Tech Toilet (with bidet water jet and air jet) vs Toilet Paper
  115. Are saturns moons keeping its rings in place
  116. Transit method
  117. Geocentrism = distorted planets?
  118. Possible missing planet
  119. Iron core in white dwarfs?
  120. Kepler 22B
  121. Can we see sky like the picture shows with naked eye?
  122. Conjunction Venus-Neptune
  123. 433 Eros close approach
  124. 2012 Quadrantid Meteor Shower peaks the morning of Jan 4 in the US.
  125. No Trouble with Tribbles - Call for Collaborators
  126. Sending a photon
  127. Grail Moon Mission
  128. Whats a good afordable telescope.
  129. Gamma ray bursts (and their damage to Terra firma)
  130. Binary Stars - Planetary Orbit?
  131. What Imbues the Higgs Boson with its Mass?
  132. A Theory I just thought of when watching Steven Hawking's Theory of Everything
  133. Evolution of the elements
  134. Comet C/2011 W3 Lovejoy about to fry near the sun
  135. How we see light
  136. Centre of Universe
  137. "The Universe" TV show?
  138. satellites
  139. betelgeuse
  140. Introduction to the scientific method parts 1 & 2
  141. Acceleration of earth's orbit
  142. Spiral arms of a galaxy
  143. Albedo
  144. The universe
  145. Total lunar eclipse 10 December 2011
  146. Magnetism in the moon?
  147. Alan Guth's inflaton, acceleration of the universe expansion rate, MOND and the fate of the universe
  148. Solar systems, Galaxies, Universe and ?
  149. How did you first hear about "Infinite Space?"
  150. a very important question , please help me and answer me
  151. Type 1a supernova, evidence for the other star
  152. Stars' emissions
  153. Us shrinking or space expanding?
  154. Physics in comoving coordinates
  155. First thought, "This must be hoax!"
  156. What is the next/best alternative to current rockets?
  157. Is the non-uniformity of the universe evidence for true randomness/against a singularity?
  158. Asteroid 2005 YU55 Close Approach to Earth Tuesday Evening (Eastern US time)
  159. Star light, an expanding universe, and peering backwards in time?
  160. [Share Pictures] Universe Map and More
  161. The big bang
  162. High heavy element content in galaxies 1.8 billion years after bigbang
  163. earth revolves round moon!
  164. Time dilation
  165. Aliens
  166. Smudged photos of moon
  167. How far would...
  168. video show-a blueprint of the universe
  169. i just got to know...
  170. Earth-Based Versus Space-Based Telescopes
  171. Time dilation and absorption lines
  172. Mass and gravity
  173. YEA to the Nobel going to the expansionist Astronomers
  174. the event horizon
  175. Way to study Astrology
  176. The nebular hypothesis is dead
  177. Important Report on the Dark Energy and Gravitational Potential Energy
  178. what if the Earth's atmosphere were thinner?
  179. what if schwarzchild solution were not exact?
  180. Infinitely smaller than Kansas?
  181. Luminosity distance
  182. Space Music
  183. Dark Matter, Dark Energy and the Hyperbolic Gravitational Field
  184. Matter and anti-matter?
  185. Question here!
  186. the orbit in our galaxy
  187. One term of Drake's equation down....
  188. (newb.) what was before the big bang
  189. Sci Fi World Creation
  190. Living near the Termination Shock
  191. hypothetical scenarios: could the Earth exist closer to the Sun without it becoming Venus? If so..
  192. Need some help with fictional CME scenario
  193. UARS Satellite to Reenter the Atmosphere in 3-5 days
  194. Cold or Warm dark matter
  195. Research/Hypothetical Scenario (Extrasolar/fictional planet)
  196. the core of a supernova, hypernova
  197. The shape of the universe
  198. Cosmological motion
  199. Prove me wrong please
  200. "MOND", Prelude to "Critique of the Universe, Introduction"
  201. What I consider to be the greatest question's in science. (please try to answer them.)
  202. How Can Guarantee Enstein E=MC formula
  203. Modelling the space
  204. how can the mass of a black hole be calculated?
  205. Standard candles
  206. Asteroid space weapon
  207. Theory of Variance and the Existence of Life on Earth
  208. Was energy or matter more produced during big bang?
  209. Gravitational Forces
  210. step towards terraforming
  211. The Expanding Universe + Time (??)
  212. Time dilation
  213. Can Satellites do this?
  214. was Susskind wrong with the solution to the information paradox ?
  215. Dumb Questions Revisited
  216. Researchers find that Earth does not need a moon to maintain complex life
  217. Did we really go to the moon???
  218. the eridinus void
  219. New Kind of Supernova Discovered
  220. Energy, Mass and Speed
  221. Need info on a meteorite
  222. What effect should Neutrinos have on the abundance of elements in the universe?
  223. Asteroid's orbit around sun mimics Earth's orbit? How can that be?
  224. Are Neutrinos a good candidate for Dark Matter?
  225. Expanding universe without big bang?
  226. Gravitational Lensing or Inferior Mirage?
  227. How long will it take voyager 1 to decay?
  228. NASA's Wise Mission Finds First Trojan Asteroid Sharing Earth's Orbit
  229. Large Hadron Collider vs Dark matter
  230. Looking back in time....
  231. Enceladus rains water on Saturn
  232. The Oldest Galaxy
  233. Book research: Faster Than Light/ Interstellar travel
  234. Wonders of the Universe: BBC 2011
  235. Why cannot the curvature of Universe be explained by mere curvature of space?
  236. Supernova brightness
  237. Looking into the past with a telescope
  238. Galaxy rotation / star motion
  239. The Missing Link: Merging Neutron Stars
  240. Where will Curiosity land?
  241. Paradox of light and time?
  242. what would happen if aliens landed on earth??
  243. Time Travel and dimensions- is it posssible??
  244. COMPETITION: Supernovae Energetics
  245. Seeing the Back of Our Head.
  246. Origins
  247. Releasing the object from Space Elevator
  248. The Longest Period Pulsar: PSR J2144-3933
  249. how would nasa have overcome the extreme cold of space~ moon
  250. The Death Of Dark Flow??