View Full Version : Astronomy & Cosmology

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  1. If Black Holes are rips in space..
  2. Do galaxies obey newtons law?
  3. Why is the Big Bang Theory better than Steady State?
  4. Acceleration due to gravity in a galaxy
  5. Why would the uniform Expansion of space produce redshift?
  6. Questions About Galactic Collisions.
  7. Is the universe limited or infinite exactly?
  8. How to calculate orbit speed
  9. galaxies, disks & spirals
  10. Question regarding nuclear fusion in a star
  11. Summer Solstice.
  12. Curiosity on Mars
  13. Does the Oort Cloud protect us somewhat from gamma ray bursts?
  14. The universe that existed before the Big Bang?
  15. Singularities and in-escapability
  16. Sunrise Summer Solstice, Sunrise Winter Solstice.
  17. Is the HUDF the center of Our Universe?
  18. Destruction of Planetary Bodies During Stellar Expansion
  19. Proposal for a New Theory About Extraterrestrial Intelligence! Seriously!
  20. About Multiverse and String Theory
  21. In our Milky Way, looking through that plane of our Galaxy, why isn't it warmer?
  22. Is there a Long Peroid Comet heading our way?
  23. Found that an Zhou Jian’s law based on the observations of the supernova Hubble diagram
  24. zhou jian Star Charts
  25. Eclipse*
  26. Do Receding Galaxies ultimately escape gravitational influence from other bodies?
  27. Cometary Orbital Paths
  28. Can merely being outside during the transit of Venus damage your eyes?
  29. Venus Transit of the Sun Tomorrow, 6th June, 2012.
  30. NASA gets two military spy telescopes for astronomy
  31. Earth-Moon Barycentre
  32. Let us with analytical cosmology to study wide-field view of the Coma Galaxy Cluster
  33. Andromeda collision & the expansion of space
  34. could m13 be thought of as almost a small galaxy
  35. Detecting a spaceship with today's sensor tech?
  36. Planetary Science questions - Building a fictitious world
  37. Making Earth 2
  38. Cosmonaut Suits: Space Radiation vs Chernobyl
  39. Ruby Payne-Scott. Astronomer and Physicist.
  40. Can a earth mass planet have a much heavier atmosphere?
  41. CMB in the past
  42. Lets Slice our Galaxy in half on the Horizontal Plane.
  43. Discrepancy between age and size universe?
  44. Our Universe Exposes Itself.
  45. what is a WORMHOLE ?
  46. mechanics
  47. Annular Solar Eclipse for Japan and Western US today
  48. The Sun's Axis
  49. Transit of Venus 06-06-2012 : visibility
  50. Spaceless Matter
  51. Dyson Sphere Solar system, And Planets?
  52. A more massive earth?
  53. The Moon closest to planet earth yesterday? Sunday/Monday 6th/7th May, 2012.
  54. Observe the venus transit!
  55. If a Star falls into a Black hole
  56. The Asteroid belt
  57. What if, A Black Hole was absorbed by a massive star?
  58. What if, Earth was orbiting a Gas Giant closer to the Sun?
  59. Could Neutrinos be causing expansion in the Universe
  60. Planetary resources
  61. Britain sent up its first satellite 50 years ago
  62. Space Blimp
  63. Where is the "Dark Matter" in the Milky Way?
  64. Faster Than the Speed Of Light?
  65. Bigcrunch theory again, help me understand why scientists believe the universe is finite.
  66. Composition of Stars
  67. Habitable planet formation
  68. why eclipses aint like this?
  69. how they do this:stereoscopic galaxy
  70. Space Craft Propulsion
  71. Our Cosmos, 14/15 billion years old?
  72. Cosmos Deployment. Random confusion or necessary construction?
  73. Is space itself really expanding?
  74. Many Planets outside the solar system?
  75. Lagrange's planetary equations
  76. Can a planet have seasons somewhat like Game of Thrones?
  77. What 'area' is the sky of the earth?
  78. Gravity
  79. If the observable universe?
  80. Suns commit suicide. Why.
  81. Iceball Planets
  82. Planet Venus, retrogard rotation, why?
  83. Neil Degrasse Tyson is awesome
  84. 3D model of solar system, new version
  85. How long will this universe last?
  86. Universal Warming
  87. what is the best method of observing the up coming transit of venus at home?
  88. Any explanations on this ?
  89. Modern science at its lowest.
  90. Expansion Festival: Does Light decay and what about black holes?
  91. Defect of illumination of Mars
  92. THE UNIVERSE: And then there was light….
  93. What will happen if the sun suddenly goes out?
  94. Is the Moon black?
  95. Dark energy - Accelerating expansion of the universe due to negative mass
  96. Europa Jupiter's Ice Moon Vs 2 miles of Antarctic ice
  97. What is the Holy Grail for Astronomy?
  98. the various dimensions
  99. More dumb questions
  100. Does gravity cast a shadow?
  101. Space Balloon- your input on the outcome!
  102. Clear Sky Chart Service - A Wonderful Weather Service For Amateur Astronomers.
  103. Supplement to Rick Thielens theory on big bang,black holes&gravity
  104. List of University Level Textbooks For Astronomy Major
  105. Dyson sphere or rotating habitat?
  106. do we know if the earth has ever been hit by a gamma ray burst
  107. Should we give up the search for intelligent life in the universe?
  108. how are there mountains in the middle of impact craters on the moon
  109. question about sun angle
  110. Are photons really massless?
  111. Mars Colony Toilet: Tech Toilet (with bidet water jet and air jet) vs Toilet Paper
  112. Are saturns moons keeping its rings in place
  113. Transit method
  114. Geocentrism = distorted planets?
  115. Possible missing planet
  116. Iron core in white dwarfs?
  117. Kepler 22B
  118. Can we see sky like the picture shows with naked eye?
  119. Conjunction Venus-Neptune
  120. 433 Eros close approach
  121. 2012 Quadrantid Meteor Shower peaks the morning of Jan 4 in the US.
  122. No Trouble with Tribbles - Call for Collaborators
  123. Sending a photon
  124. Grail Moon Mission
  125. Whats a good afordable telescope.
  126. Gamma ray bursts (and their damage to Terra firma)
  127. Binary Stars - Planetary Orbit?
  128. What Imbues the Higgs Boson with its Mass?
  129. A Theory I just thought of when watching Steven Hawking's Theory of Everything
  130. Evolution of the elements
  131. Comet C/2011 W3 Lovejoy about to fry near the sun
  132. How we see light
  133. Centre of Universe
  134. "The Universe" TV show?
  135. satellites
  136. betelgeuse
  137. Introduction to the scientific method parts 1 & 2
  138. Acceleration of earth's orbit
  139. Spiral arms of a galaxy
  140. Albedo
  141. The universe
  142. Total lunar eclipse 10 December 2011
  143. Magnetism in the moon?
  144. Alan Guth's inflaton, acceleration of the universe expansion rate, MOND and the fate of the universe
  145. Solar systems, Galaxies, Universe and ?
  146. How did you first hear about "Infinite Space?"
  147. a very important question , please help me and answer me
  148. Type 1a supernova, evidence for the other star
  149. Stars' emissions
  150. Us shrinking or space expanding?
  151. Physics in comoving coordinates
  152. First thought, "This must be hoax!"
  153. What is the next/best alternative to current rockets?
  154. Is the non-uniformity of the universe evidence for true randomness/against a singularity?
  155. Asteroid 2005 YU55 Close Approach to Earth Tuesday Evening (Eastern US time)
  156. Star light, an expanding universe, and peering backwards in time?
  157. [Share Pictures] Universe Map and More
  158. The big bang
  159. High heavy element content in galaxies 1.8 billion years after bigbang
  160. earth revolves round moon!
  161. Time dilation
  162. Aliens
  163. Smudged photos of moon
  164. How far would...
  165. video show-a blueprint of the universe
  166. i just got to know...
  167. Earth-Based Versus Space-Based Telescopes
  168. Time dilation and absorption lines
  169. Mass and gravity
  170. YEA to the Nobel going to the expansionist Astronomers
  171. the event horizon
  172. Way to study Astrology
  173. The nebular hypothesis is dead
  174. Important Report on the Dark Energy and Gravitational Potential Energy
  175. what if the Earth's atmosphere were thinner?
  176. what if schwarzchild solution were not exact?
  177. Infinitely smaller than Kansas?
  178. Luminosity distance
  179. Space Music
  180. Dark Matter, Dark Energy and the Hyperbolic Gravitational Field
  181. Matter and anti-matter?
  182. Question here!
  183. the orbit in our galaxy
  184. One term of Drake's equation down....
  185. (newb.) what was before the big bang
  186. Sci Fi World Creation
  187. Living near the Termination Shock
  188. hypothetical scenarios: could the Earth exist closer to the Sun without it becoming Venus? If so..
  189. Need some help with fictional CME scenario
  190. UARS Satellite to Reenter the Atmosphere in 3-5 days
  191. Cold or Warm dark matter
  192. Research/Hypothetical Scenario (Extrasolar/fictional planet)
  193. the core of a supernova, hypernova
  194. The shape of the universe
  195. Cosmological motion
  196. Prove me wrong please
  197. "MOND", Prelude to "Critique of the Universe, Introduction"
  198. What I consider to be the greatest question's in science. (please try to answer them.)
  199. How Can Guarantee Enstein E=MC formula
  200. Modelling the space
  201. how can the mass of a black hole be calculated?
  202. Standard candles
  203. Asteroid space weapon
  204. Theory of Variance and the Existence of Life on Earth
  205. Was energy or matter more produced during big bang?
  206. Gravitational Forces
  207. step towards terraforming
  208. The Expanding Universe + Time (??)
  209. Time dilation
  210. Can Satellites do this?
  211. was Susskind wrong with the solution to the information paradox ?
  212. Dumb Questions Revisited
  213. Researchers find that Earth does not need a moon to maintain complex life
  214. Did we really go to the moon???
  215. the eridinus void
  216. New Kind of Supernova Discovered
  217. Energy, Mass and Speed
  218. Need info on a meteorite
  219. What effect should Neutrinos have on the abundance of elements in the universe?
  220. Asteroid's orbit around sun mimics Earth's orbit? How can that be?
  221. Are Neutrinos a good candidate for Dark Matter?
  222. Expanding universe without big bang?
  223. Gravitational Lensing or Inferior Mirage?
  224. How long will it take voyager 1 to decay?
  225. NASA's Wise Mission Finds First Trojan Asteroid Sharing Earth's Orbit
  226. Large Hadron Collider vs Dark matter
  227. Looking back in time....
  228. Enceladus rains water on Saturn
  229. The Oldest Galaxy
  230. Book research: Faster Than Light/ Interstellar travel
  231. Wonders of the Universe: BBC 2011
  232. Why cannot the curvature of Universe be explained by mere curvature of space?
  233. Supernova brightness
  234. Looking into the past with a telescope
  235. Galaxy rotation / star motion
  236. The Missing Link: Merging Neutron Stars
  237. Where will Curiosity land?
  238. Paradox of light and time?
  239. what would happen if aliens landed on earth??
  240. Time Travel and dimensions- is it posssible??
  241. COMPETITION: Supernovae Energetics
  242. Seeing the Back of Our Head.
  243. Origins
  244. Releasing the object from Space Elevator
  245. The Longest Period Pulsar: PSR J2144-3933
  246. how would nasa have overcome the extreme cold of space~ moon
  247. The Death Of Dark Flow??
  248. A Ghost In The Shell: The Mystery Of SS433
  249. Chandra’s End State For Degenerate Stars
  250. Riskest asteroid in the next century, 2011 AG5