View Full Version : Astronomy & Cosmology

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