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  1. Observation of Gravitational Waves from a Binary Black Hole Merger (154 replies)
  2. Parkes discovers hundreds of new galaxies hidden behind Milky Way Zone of Avoidance (0 replies)
  3. Do new streetlamps in LED Angeles increase LP ? (2 replies)
  4. New Flyover Video Of Ceres (3 replies)
  5. Oxygen isoptopes signature reveals Moon created from head-on collision (0 replies)
  6. Globular clusters may spawn new star generations by drawing gas from host galaxy (4 replies)
  7. Evidence grows for giant planet on fringes of Solar System (0 replies)
  8. New distances to planetary nebulae (5 replies)
  9. New trans-Neptunian object discovered? (4 replies)
  10. China to launch experimental quantum entanglement communications satellite in 2016 (0 replies)
  11. Observing space curvature. (35 replies)
  12. InSight lander - One of five spacecraft to make their way to Mars in 2016 (3 replies)
  13. "The First Predicted Supernova Image" (1 replies)
  14. Hot Jupiters contain water (0 replies)
  15. Exoplanets - False Positives - NASA's Kepler Observatory (5 replies)
  16. Tardigrade's genome sequenced - 17.5% foreign DNA - large horizontal gene transfer? (5 replies)
  17. Parkes detects twin fast radio bursts (FRBs) (0 replies)
  18. Earth's water primordial (1 replies)
  19. Molecular oxygen on Comet 67p-Churyumov-Gerasimenko (1 replies)
  20. Spooky stuff and closed loopholes (0 replies)
  21. Definition of kilogram set to change to physical constant (13 replies)
  22. Does KIC 8462852 harbour a Dyson sphere? (12 replies)
  23. A Catchy Science Tune. (0 replies)
  24. BL Tel (2 replies)
  25. Neutrino Oscillations (42 replies)
  26. NASA release of 8400 images from Apollo missions (2 replies)
  27. Vacuum fluctuations experiment showing (1 replies)
  28. NASA News Conference Monday - Major (10 replies)
  29. Fundamental symmetry in nature confirmed - CERN (0 replies)
  30. Climate Change data may need revision. (42 replies)
  31. Advanced LIGO - start for the search of the detection of gravitational waves (1 replies)
  32. New journal about telescopes & instrumentation (1 replies)
  33. Homo naledi, a new species of the genus Homo from the Dinaledi Chamber, South Africa (3 replies)
  34. Unaided-eye Deep Sky Jewels in the Southern Hemisphere (19 replies)
  35. Caltech's latest "artifical leaf" design to crack water into H2 & O2. IEEE Spectrum (0 replies)
  36. A Global High Voltage DC (HVDC) Supergrid - IEEE Spectrum article (3 replies)
  37. Stephen Hawking theorizes solution to black hole information paradox (19 replies)
  38. Disappointed. (4 replies)
  39. we are more crowded then we think (3 replies)
  40. Closest galaxy collision ever found is spectacular (0 replies)
  41. 51 Eridani b imaged by GPI (0 replies)
  42. the 'dying' universe (0 replies)
  43. New sunspot analysis shows rising global temperatures not linked to solar activity (1 replies)
  44. CERN works on superconducting shield to protect astronauts (3 replies)
  45. Very accurate Photometry with a DSLR (9 replies)
  46. Deep Antlia Galaxy Cluster image by Rolf Olsen (2 replies)
  47. Fat particles (7 replies)
  48. An analysis of the first three catalogues of southern star clusters and nebulae (9 replies)
  49. ABC Galaxy Explorer (0 replies)
  50. color contrasting southern doubles (6 replies)
  51. LHC confirms beauty quark obeys Standard Model but does not need Supersymmetry (43 replies)
  52. Paul Haese's M8 Lagoon, the untold story (4 replies)
  53. Weyl fermions finally discovered - ultra high mobility (6 replies)
  54. Mini Ice age pending. (19 replies)
  55. LHC confirms pentaquark (2 replies)
  56. why does light radiate? (3 replies)
  57. planetary formation (5 replies)
  58. Check this out.... (3 replies)
  59. Stellar evolution theory just received a boost (4 replies)
  60. How does the universe end? (9 replies)
  61. gravity 101 (96 replies)
  62. thought experiment? (11 replies)
  63. The singulary at the start of the Universe. (4 replies)
  64. projects I'm working on. (28 replies)
  65. A Challenging Question about an Infinite Universe. (106 replies)
  66. Double star measurements (4 replies)
  67. The size of the universe... scaled (46 replies)
  68. WANTED - Malin's deep NGC253 image in 1981 S&T (3 replies)
  69. Electromagnetic Drive Validated (13 replies)
  70. Mind boggling - Transistor Production Has Reached Astronomical Scales - IEEE Spectrum (9 replies)
  71. Astronomers discover supervoid 1.8 billion light years across (22 replies)
  72. For Science! (11 replies)
  73. Stable Orbit (11 replies)
  74. Astronomy and cosmology help for a screenplay (12 replies)
  75. Asteroid Hunting - Please Help! (4 replies)
  76. O solo mio (0 replies)
  77. Solar system (2 replies)
  78. After dark (5 replies)
  79. Beginner's Photometry Questions (7 replies)
  80. Distance & Luminosity of NGC 1097 & NGC 2997 (3 replies)
  81. Optimizing supernova search - Which Galaxies? (2 replies)
  82. Emmy Noether (0 replies)
  83. Potential new impact structure in Qld (3 replies)
  84. Keen to undertake project (13 replies)
  85. Dwarf Galaxies ... (0 replies)
  86. Large- and Super- volcanoes. Local and global Effects & Hazards (2 replies)
  87. Astronomy/physics related activity ideas? (1 replies)
  88. Jawbone of earliest known hominid discovered in Ethiopian Rift Valley (1 replies)
  89. Gravitationally lensed supernova provides insight into dark matter distribution (0 replies)
  90. Background Galaxies within Andromeda (0 replies)
  91. Rocks show life could have flourished on Earth 3.2 billion years ago (4 replies)
  92. Plumes on Mars .. (1 replies)
  93. Review - NATMAP Digital 1:250000 maps (6 replies)
  94. Centaurus A Pro-amateur collaboration -Rolf Olsen (5 replies)
  95. Magnetar magnetic field strength? (2 replies)
  96. Help needed to identify a star (1 replies)
  97. we are not alone (1 replies)
  98. parallax of nearest stars (2 replies)
  99. New Electrical Form of Solid Material (2 replies)
  100. two universes one with time running backwards (2 replies)
  101. The future of the HST (14 replies)
  102. Oh my god. It's not full of stars. (3 replies)
  103. What can we learn from narrowband filters? (14 replies)
  104. Rosetta and Philae's Findings (11 replies)
  105. Hybrid rocket engines using paraffin wax - IEEE Spectrum article (2 replies)
  106. ? Spectral width of emission lines (3 replies)
  107. ? Higgs-boson (16 replies)
  108. Not Philae on the beach (0 replies)
  109. NASA to test new ultra-black nanotube telescope light baffle onboard ISS this year (1 replies)
  110. Dark Matter Observation? (5 replies)
  111. Black Hole Question (31 replies)
  112. Fewer Australian final year school students taking science and maths (17 replies)
  113. NGC55 Supernova, Nova, impostor? (16 replies)
  114. Ascorbic Acid comparison:- Microscope images (10 replies)
  115. Symetry not exist in space (future for sky mechanica ) (0 replies)
  116. A supermassive black hole in an ultra-compact dwarf galaxy - Nature (2 replies)
  117. Report: NASA’s Efforts to Identify Near-Earth Objects and Mitigate Hazards (0 replies)
  118. Photometry (8 replies)
  119. Atmospheric Carbon Dioxide - Latest WMO figures (59 replies)
  120. I'm pushing mass m OR m*g OR m*g +/- Fr (0 replies)
  121. The Laniakea supercluster of galaxies (you live there) (5 replies)
  122. I want an Astronomy career in WA - advice needed (29 replies)
  123. Apollo 11 Command Mod. Hatch (7 replies)
  124. Two Galileo GNSS satellites placed in wrong orbits (2 replies)
  125. VCE or CERTIV in Astronomy? (6 replies)
  126. Major Scientific Discoveries - Timeline (26 replies)
  127. 8 August - anniversary of the birth of Paul Dirac (0 replies)
  128. Rosetta in final approach (0 replies)
  129. Cosmology String Theory and Multiverses (2 replies)
  130. Naming objects (2 replies)
  131. All you ever need (0 replies)
  132. Rosetta's comet is a contact binary! (9 replies)
  133. New ultra black nanotube material proposed for telescope flocking (0 replies)
  134. what is science..the word..the system..your view (48 replies)
  135. Catalogs and Atlases of galaxies on the Internet (8 replies)
  136. New Horizons craft (8 replies)
  137. BOSS 102 & Not Out! (18 replies)
  138. The loneliest globular - ejected from Virgo Cluster? (6 replies)
  139. Inflation deflated??? (0 replies)
  140. Is Saturn actually a brown dwarf ? (3 replies)
  141. Galaxy Bulges & Elliptical Galaxies: Understandable(!) Lecture (0 replies)
  142. Sentient life elsewhere in the Milky Way (43 replies)
  143. News+Views (2) : Ultra Compact Dwarfs; Hubble Const.; Old stellar populations (0 replies)
  144. Sophisticated instrument set to search for axion (0 replies)
  145. News & Reviews - Milky Way, M31, supermassive clusters, M83 (7 replies)
  146. Does Light Have To Speed Off? (16 replies)
  147. NGC1399 - Globular Clusters "swarm" image (1 replies)
  148. Exciting conferences: (1) Milky Way (2) Time Machines (0 replies)
  149. Globulars -vs open clusters (7 replies)
  150. Forensic Astronomy: The Curious Case of Wr20a (2 replies)
  151. looking for info on Nova Puppis 1942 cp puppis (5 replies)
  152. Extragalactic astronomy; some "hot" recent results (1 replies)
  153. Westerlund 2: Here we go again . . . (2 replies)
  154. Telescope collecting light (5 replies)
  155. Mathematics and War. (9 replies)
  156. A very sharp image of Westerlund 1 (2 replies)
  157. Massive clusters Westerlund 1 & 2 - hot pix!! (0 replies)
  158. Dark matter in the news (0 replies)
  159. A New Galactic Yardstick (0 replies)
  160. Discovery of our Galaxy's spiral structure -as it happened (4 replies)
  161. Proxima Centauri motion (14 replies)
  162. Online catalogue of Galaxies (7 replies)
  163. First Ring System Around Asteroid (7 replies)
  164. Magellanic madness (7 replies)
  165. New planetoid found (0 replies)
  166. VPHAS+ ...The ultimate H-alpha survey? Can amateurs do better?! (4 replies)
  167. NASA's Spitzer Telescope - JPL Announcement (2 replies)
  168. Fierce solar storm missed Earth by 9 days on 23 July 2012 (1 replies)
  169. A question about momentum (4 replies)
  170. Gravitational Waves??? (29 replies)
  171. Fast facts about nearby dwarf galaxy NGC 625 (2 replies)
  172. 13 Giant Nearby Galaxies (10 replies)
  173. Mt Stromlo - $150 million Funding to track space junk (5 replies)
  174. Crispr - A Powerful New Way to Edit DNA (1 replies)
  175. Why are people not so interested in Astronomy? (37 replies)
  176. Kepler telescope team announce 715 new planets (1 replies)
  177. Close conjunction Moon / Venus (1 replies)
  178. NuSTAR - Nuclear Spectroscopic Telescope Array (0 replies)
  179. You don't always need a telescope.... (2 replies)
  180. E3, now for the really bad news (0 replies)
  181. E3 in Chamaeleon and what the ?? are 'yellow stragglers'? (0 replies)
  182. Oldest Known Star found by ANU Team (13 replies)
  183. Who said that Professional Astronomers and Amateurs cannot work togeather!!!!. (7 replies)
  184. Sound recordings (4 replies)
  185. Snowball Chaos ..? (0 replies)
  186. Hawking: Information Preservation and Weather Forecasting for Black Holes (3 replies)
  187. Geological Activity on Moon (1 replies)
  188. Einstein Field Equations for beginners (7 replies)
  189. Gemini Exo Planet Imager delivers Peta Pictoris B (1 replies)
  190. Astronomers Discover a Double Take of Exploding Stars in a Distant Galaxy (8 replies)
  191. Interesting thread on Cloudy Nights (3 replies)
  192. Solar powered steam engine with storage (6 replies)
  193. Researchers demo eye cells survive passing through inkjet printer nozzle (0 replies)
  194. DARPA to deliver new telescope to Western Australia (3 replies)
  195. Latest Theory - Rainbow Gravity (0 replies)
  196. Possible 200km-high water geysers detected on Europa? Paper in journal Science. (0 replies)
  197. Advances in Quantum Physics (2 replies)
  198. A very non-BOSS supernova event (0 replies)
  199. DNA of 400,000 year old hominid sequenced (7 replies)
  200. Cassini takes new images Hexagon storm (2 replies)
  201. Somthing interesting (0 replies)
  202. Peanut shaped MilkyWay Galaxy (2 replies)
  203. BOSS SN81 - something different (13 replies)
  204. Comprehensive recent overview of galaxy Morphology & Classification (4 replies)
  205. Actual Universe vs Observable Universe (1 replies)
  206. WLM, a fun challenge for us (7 replies)
  207. first-ever pictures of Milky Way’s early years (2 replies)
  208. New Scientist - Solar activity heads for lowest low in four centuries (4 replies)
  209. Curious to know how to determine direction at Earth poles (3 replies)
  210. AAO's new HERMES advanced multi-spectrograph being commisioned now (3 replies)
  211. while watching 'Gravity'... (6 replies)
  212. Asteroid P/2013 P5 found by Hubble to have six comet-like tails (0 replies)
  213. SKA information (1 replies)
  214. 1930 Tolman surface brightness test and Michelson Morley (0 replies)
  215. Our Galaxy - brilliant (but very hard) set of recent lectures (3 replies)
  216. Far away galaxies are very active! (4 replies)
  217. ASKAP - Phased Array Receiver scoops engineering awards (16 replies)
  218. R Aquarii and Cederblad CE211 (7 replies)
  219. Cartoon - Is astrometry more important than cosmology? (1 replies)
  220. A gas giant with no home star (1 replies)
  221. Higgs & Englebert Nobel Prize (5 replies)
  222. ALMA described - a nice, easy, chatty article (1 replies)
  223. ALMA nearly complete. VLA closed until further notice! (0 replies)
  224. Molecular outflow in NGC 253 (continued) - implications for galaxy evolution (2 replies)
  225. Massive molecular outflow in NGC 253 - galaxies that expel lots of gas (0 replies)
  226. Hot new symposium about spiral & irreg. galaxies (1 replies)
  227. List of satellites of M31 & the Milky Way Galaxy (4 replies)
  228. Serious semi-popular book on Milky Way - a long awaited event (3 replies)
  229. Prawn'd! (2 replies)
  230. Antares Rocket Launch (0 replies)
  231. 2013 EPSC London (7 replies)
  232. Cubesat update (ArduSat) (2 replies)
  233. Centaurus Cluster of Galaxies - part II (3 replies)
  234. Centaurus Cluster of Galaxies - Part I (0 replies)
  235. Star 'chains' in NGC 7492 Aquarius (0 replies)
  236. Hubble Bubble (1 replies)
  237. BOSS Supernova 72 (14 replies)
  238. Shedding Light on Black Holes (2 replies)
  239. Does Betelgeuse (and other giants) have a photosphere ? (1 replies)
  240. Kepler Space Telescope unfixable (3 replies)
  241. Europa mission wish list (3 replies)
  242. End of Siding Spring Survey (1 replies)
  243. BOSS new distant SN (15 replies)
  244. planetary nebula M 1-41 ? (0 replies)
  245. Microscopes for serious beginners - which brand? (40 replies)
  246. Moon/High Tide Issue (6 replies)
  247. Black body radiation may be attractive (3 replies)
  248. Question for the palaeontologists/geologists (19 replies)
  249. BOSS jackpot? (50 replies)
  250. Abell 3574 (IC 4329 Group) - CONTINUED (from Observationsforum) (3 replies)