View Full Version : Astronomy & Cosmology

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  1. Could the expansion of the Universe be subject to negative feedback?
  2. Voyager
  3. What is the heaviest element our Sun can make?
  4. Does the International Space Station slow down?
  5. Reading the Universe.
  6. Are we living inside a black hole?
  7. Mercury: A Case For Settlement
  8. Getting useful data from a redshift
  9. Understanding reference planes for NASA's "Horizons" tool?
  10. Life on other planets
  11. Is there a space/zone where the Universe Is?
  12. Speed of Light, should be named different?
  13. Catalyst: 29/8/'13
  14. Ununpentium and supernova
  15. Could it be possible to determine if the Universe rotates?
  16. Open roof space station?
  17. Drilling vs. Melting
  18. Swimming pool on the moon
  19. Widmanstätten in meteorites
  20. Super-solar flare
  21. How to make a Universe out of Nothing. You decide.
  22. faster than light speed
  23. Interstellar meteorites
  24. Near-earth gravity
  25. What is "Speed increment at infinity" ??
  26. Your Age on Other Planets
  27. Distance in space?
  28. Gravitational lensing or hot gas?
  29. Questions for Brian Greene
  30. which star is considered the brightest start? and why?
  31. Explosive Issue
  32. Hubble Sees the Fireball from a "Kilonova"
  33. Super-supernovae spell trouble for dark energy
  34. Supernova?
  35. Spiral galaxies have very flat disks. Why?
  36. Vacuum box test for: gravity, acceleration or centrifugal force?
  37. If the universe is spatially finite and flat, could you fly 'out of space'?
  38. Galactic electric fields
  39. Venusian moon
  40. Star drifting in disc shape system
  41. Is the idea of the Oort cloud dated?
  42. What is a feasible way for the nature to generate an Atom?
  43. Help bring radio astronomy to the public
  44. Question about "Ancient Aliens"
  45. matter and the expansion of the universe
  46. What is the escape velocity of VY Canis Majoris, and the relation between mass and volume?
  47. Gliese 667C
  48. Cosmological infinities
  49. concept of the flow of the time
  50. Space travel question!
  51. Apparent Red shift in a discrete Newtonian reference frame
  52. How much rocks is needed for it to melt?
  53. Are Free-floating Planets 'Planets'?
  54. Arrow's of time
  55. Big Asteroid Flyby on Friday, May 31
  56. Doubts in big bang theory.
  57. is space contains energy in it ?
  58. relative motion
  59. closed regenerative systems
  60. Explosion on the moon
  61. Hawking: Mankind has 1,000 years to escape Earth
  62. Planet-Hunting Kepler Spacecraft Suffers Major Failure
  63. More Questions about Light
  64. Could this planet support liquid water
  65. Orbiting a Black Hole
  66. exploding star?
  67. Another Earth In Our Solar System.
  68. Size of the universe
  69. Planets
  70. Quantum-what-now?
  71. Looking at the moon during the day
  72. A new look at DARK MATTER & DARK ENERGY
  73. Help with some easy basic formula about astronomy
  74. Combining gravity and quantum mechanics. What are gravitons then?
  75. Mars One - Would You Go?
  76. getting off this ball of rock
  77. 100% certain I am at the centre of my universe.
  78. NASA touts plan to grab asteroid as 'unprecedented technological feat'
  79. Jupiter Earth connection
  80. A phone call at the speed of light?
  81. produce antigravity to get to space quicker
  82. Total recall question
  83. Einstein's Theory - Which One is Moving?
  84. recent meteors and fireballs
  85. Black Holes
  86. Singularities and nothing.
  87. Red shift dilemma.
  88. Time Dilation at Near Lightspeed
  89. Basic Question
  90. Comets
  91. "Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us." -Calvin What did he mean?
  92. If Earth had a 45 degree tilt?
  93. Astronomical Science
  94. Drafting a Comet
  95. Is our solar system moving up and down from the galaxy plane?
  96. Stellar Nuclear Fusion
  97. why cant we see the local interstellar cloud?
  98. Warped Space
  99. Black Hole, future and past
  100. An expanding universe?
  101. Constellation of Origin?
  102. Astronomy Magazine
  103. Singularity
  104. Confirmation of Jupiter
  105. Theory that reduces complexity of dimensions to base units
  106. Big bang
  107. What exactly is antimatter?
  108. dark energy, obviously
  109. The Sun is expanding, or are we moving closer?
  110. What am I seeing, really?
  111. Meteorite fall in Chelyabinsk!
  112. how come ????
  113. Space is curved relative to what?
  114. A Sort of Problem in Astrophysics
  115. Earth-like planets are right next door
  116. lorentz?
  117. math forum?
  118. Ringside seats for the Big Bang
  119. Northrop Grumman Completes All Flight Optics for NASA's James Webb Space Telescope
  120. Iron bullets from orion nebula
  121. learning black hole theory
  122. The Big bang Theory v The steady state theory v World in a world.
  123. Heisenberg's Uncertainty Principle as applied to Black Holes
  124. space regarding collapsing stars...
  125. Would we have a Big Bang Theory today if...
  126. How feasible is using railgun technology to launch space probes?
  127. The Universe 'froze' its way into existence in a Big Chill, say physicists
  128. Shocking truth, biggest item in universe 10.000 more big than our milky way
  129. Telescope
  130. Challenging Cosmology
  131. question on meteorite from mars
  132. Orbit of the Earth
  133. Comets PANSTARRS & ISON
  134. Odd object on mars
  135. How big can a rocky planet get?
  136. Reviving the Mars?
  137. Gamma ray bursts
  138. some interesting theory about our universe
  139. Astronomy Notes
  140. Astronomy Notes
  141. Deep Sky
  142. Q about satellite
  143. questions on planet formation
  144. "Active Galaxies"
  145. What if we get 2 moons ?
  146. Andromeda question
  147. Winter solstice - December 21
  148. Probably another dumb one...
  149. Black hole inside earth?
  150. Future eclipses
  151. Standard Candles in an Expanding Universe
  152. May some Quarks be origined by a Black Hole explosion?
  153. RIP Sir Patrick Moore
  154. May Black Holes be considered as ripped of space-time?
  155. Technologies to wider the current limmits of Our Universe
  156. HD40307G News
  157. Exoplanets
  158. Moon
  159. Life in the Universe.
  160. Moon stations
  161. Meteor showers
  162. A dizzying hypothesis
  163. Mysterious Cosmic 'Dark Flow' Tracked Deeper into Universe
  164. Perseid meteor shower 2013
  165. Another Black Hole Question
  166. Big Bang
  167. Weird
  168. Explosions in Space
  169. radio signals
  170. Super massive black holes and galaxy formation
  171. NASA's Curiosity's secret discovery after sampling Martian soil.
  172. Libration of a Tidally Locked Planet
  173. Simple Law of the Universe that would probably be trashed!
  174. Is Star Trekking just around the corner
  175. tidal friction
  176. M theory - best one so far?
  177. Location of Earth in the Universe
  178. LHC results and dark matter
  179. Is it The Moon will Eclipse the Sun within the next15/16 Hours.?
  180. Matter V Anti-matter imbalance and inflation
  181. Some Questions on Astro-Physics
  182. Another dumb one
  183. Down under people...yes you Westward
  184. Photosensitivity
  185. Inverse square law resolves Olbers' paradox
  186. mine elements from outer space?
  187. A galaxy a trillion light years away...
  188. Photons from Stars
  189. Is the universe alive !?!?!?!?!?!?!?!??
  190. Super Fast Pictures of light
  191. The Stars We See at Night
  192. Solar System Geography.
  193. The sun
  194. Interesting Things....?
  195. Return to Dumb Questions
  196. David
  197. Why is oxygen the third most abundance element on the sun?
  198. Divine Space - first big game with 'real' universe
  199. Meteorite that doesn't burn?
  200. Felix Baumgartner Jumps from about 35km. Next step?
  201. Question About The Big Bang
  202. Is the neon a poison, that overwhelming the origin of life?
  203. NASA stupidity
  204. Why the existence of the Universe does not need to be solved (image heavy)
  205. Half moon tilted lit up
  206. Stars, Milky Way, Cosmology
  207. Comets, Meteors, Asteroids
  208. Moon facts
  209. Books on the Likelihood/Nature of Extra-Terrestrial Life
  210. How did the universe get to have so many neutrons?
  211. Harvest Moon - September 29, 2012
  212. Astronomy in the Atacama Desert.
  213. Another shot from the hip by NASA? Gravel on Mars
  214. Universe or Multiverse
  215. Spectacular (once in a lifetime?) comet expected next November (2013)
  216. Huge Earth-ish planet?
  217. Missing Baryons Found?
  218. A more massive mars
  219. Clarification needed on exactly what accelerating vs constant expansion means
  220. Autumn equinox - first day of fall
  221. If Mars was closer to the sun
  222. Sirius Color Change Mystery
  223. Planets
  224. Atmospheric retention
  225. What if the moons of gas giants where closer?
  226. Venus passing in front of the sun
  227. Stellar Black Hole Creation
  228. Calculating apparent magnitude of Saturn from Rhea
  229. Big Questions About the Sun and Solar System - 10 Year Agenda For Answers
  230. Questions on my hypothetical exoplanet?
  231. Why are so different the galaxies of the HUDF picture?
  232. Science Channel - How The Universe Works
  233. Two alien planets found with twin suns
  234. Are the sun and moon nearing each other along the time ?
  235. Using the CMBR as a frame of reference.
  236. Wow!!! (Curiosity)..
  237. Could anything reverse the pull of Earth's gravity?
  238. The curious motions of venus... Can we explain it?
  239. What kind of celestial body would be best for forming life and/or complex molecules?
  240. Possibilites of life on Europa?
  241. Acid Content of the Atmosphere of Venus
  242. Is the age of the universe the same in all frames?
  243. Curiosity Rover landing at the weekend
  244. A new way of thinking about G and c. Constants?
  245. Why we need a 5th dimension to undestand the shape of the Universe?
  246. Can a practical reason be given to explain the vast interstellar distances?
  247. How does sun an other stars look from space?
  248. Southern Skies Star Party
  249. How can a Neutron Star have carbon atmosphere?
  250. Is Mizar 4 stars or 5?