PDA

View Full Version : Astronomy & Cosmology



Pages : [1] 2 3 4 5 6 7 8 9 10

  1. 3D printer for some space stuff
  2. Space debris
  3. The Hubble Constant -Is it best derived from the CMB? Or by optical telescopes with distance ladders and quasars. etc.?
  4. M87's Super Massive Black Hole : New radio telescope data reveal magnetic fields with exceptional resolution!
  5. Do you believe in possibility of life in other galaxies?
  6. An Ocean, and Rivers on Mars?! Possible loss by photodissociation and impact of life on the surface.
  7. The most important issue to be solved in space exploration
  8. The most advanced private space company of the present time
  9. New exoplanet candidate found in the habitable zone of the closest star system
  10. Space technology that can help us save our environment
  11. Nearly 164 UFO Sightings Reported in Idaho in 2020!
  12. Space junk
  13. spacecraft that can be used for microgravity missions and experiments
  14. Earth's Magnetic Field. Does it persist today from one or more large impacts, or something else?
  15. The hybrid rocket
  16. The emerging space technology
  17. Crewed or uncrewed missions?
  18. The influence of space weather on the space crafts` launches
  19. The most advanced space craft of the recent time that impressed you the most
  20. The problem of crushing Starship
  21. Mars Colonisation
  22. Unobservable Universe Will Come Into View (eventually)
  23. Why can't we go faster than the light. Is this speculation physical or mathematical?
  24. Sanity check about Jupiter's recent closest approach
  25. Astronomers will be able to image Earth-like planets by 2025
  26. Inside The 24/7 Search For Another Habitable Planet Within 100 Light Years Of Earth
  27. The Square Kilometre Array
  28. Distance between stars.
  29. Dark matter and galaxies
  30. What are the types of planet?
  31. I have different red-shift question
  32. A basic question about the big bang
  33. The Habitable Exoplanet Hunting Project
  34. Cosmic Navigation
  35. time Space Fabric
  36. Block out the sun.
  37. Could we be on the other side of a black hole?
  38. 1919 arthur edington question
  39. Why do we gain sunlite "after the winter solstice" in the afternoon and not in the morning?
  40. effects of gravity
  41. Is the Big Bang still banging?
  42. Mars.
  43. Red shift
  44. Presentation: Worldwide Digital Sundial
  45. Question
  46. Reaching The Stars
  47. Magnetic reconnection, flux transfer events and atmospheric currents
  48. If the Moon was the size of Mercury and much closer (ex:half the distance away) ?
  49. Research projects for high schoolers
  50. Meteor varients
  51. Planets that are similar to Earth that have been hit by a Gamma Ray Burst.
  52. Variant on giant-impact hypothesis - the origin of continents
  53. Big Bang, CMB and Edwin Hubble
  54. Vacuums
  55. The mass of the early universe
  56. Potential theory on a black hole's anomalistic features
  57. Artificial Meteor Shower
  58. can anyone identify this object
  59. Atacama Desert.
  60. Question about light-years
  61. why is my neighbor covering his windows during the eclipse?
  62. Eclipse 2017
  63. Why not have a bathing pool in space?
  64. Dumb Questions Reborn
  65. GMC or what?
  66. Rare Selenelion on wednesday
  67. Why is the BBT believed to be an accelerating expansion?
  68. Dark matter and doppler effect
  69. What is known about the Surfaces of the Gas Giants?
  70. Concening Europa's Eclipse Times?
  71. What would the universe look like if inflation did not occur?
  72. How do we know that black holes form?
  73. Black holes don't exist and neither does the big bang theory.
  74. Stephen Hawking Says 'There Is No God'
  75. Radio Astronomy
  76. Should mass vanish if 0 Kelvin is actually enforced into a system?
  77. Will we colonize the solar system in my life time?
  78. 0 Kelvin PPL!!
  79. Sept., 11 th 2014 ~ NEWS..
  80. Black Hole-Particles-Speed of light
  81. Is it possible to have a disc planet?
  82. Did the ancient Indians know about all the planets in our solar system?
  83. Which way South on WMAP
  84. Is it scientifically impossible to recreate our universe in the lab?
  85. Why does the sun have differential rotation rates
  86. How hot is dark matter?
  87. The Big Bang
  88. Is the 4D time-space continuum real?
  89. The Big Bang and a 4-d Black Hole.
  90. Supermassive Black Holes
  91. Is the speed of light really a constant?
  92. White holes
  93. Could you freeze the sun?
  94. Power and other systems on Mars
  95. Kiwaka app | Developing childrenís interest in Astronomy
  96. Timer
  97. "The Black Hole at the Beginning of Time"
  98. How close would our nearest neighbors be?
  99. Layers to astroids
  100. universal expansion
  101. Should gravitational lensing produce chromatic aberrations?
  102. Brian Greene - Space and Time into a single Continuum on YouTube
  103. Mars. Dry after all.
  104. Question about steering while traveling really fast...
  105. Why don't we turn Mars' wind into water?
  106. Black holes questions
  107. No dark energy???
  108. Oort Cloud Query
  109. Online teaching resources, around 8th or 9th grade, for astronomy
  110. Dark Energy
  111. No lunar seas on far side of the moon, explained but...
  112. Venera 13
  113. Density of air (Gas) question
  114. How was the visible horizon measured?
  115. Would it be smart...
  116. The shrinking of Jupiterís Great Red Spot
  117. Question about the Color of Stars.
  118. What holds the Heliosphere together?
  119. Void Models and the Copernicna Principle
  120. Galactic Collisions
  121. Weighing the planet earth.
  122. Let' talk of a little Astrophysics
  123. Universe recreated in massive computer simulation
  124. Lost Brother Found
  125. Will a starship be destroyed by dust?
  126. Age of the Universe
  127. Carrington-class CME Narrowly Misses Earth
  128. binary star system
  129. Life Should be Common in the Universe, physicists say
  130. Please explain the edge of the Universe
  131. James Webb Telescope completed
  132. is my understanding right or wrong?
  133. Is space expanding or is spacetime expanding?
  134. Pioneer 10 & 11 trajectory anomaly
  135. Please explain me how did universe came into existence?
  136. International Space Station
  137. Kepler-186f mass and radius
  138. Why is the Moon moving farther away from the Earth?
  139. The density of the universe.
  140. Questions about Birkeland Currents?
  141. Are areas of the universe receding from each other at faster than light speeds?
  142. I NEED someone good at astrology for this.
  143. Picture of Earth and Moon from Mars
  144. warning for supernova near earth ?
  145. any warning if GRB aimed directly at earth ?
  146. Question about: Expansion of the Universe.
  147. How to blow up a Star?
  148. How did Bradley determine the speed of light in 1779?
  149. What is Space?
  150. New Dwarf Planet Found At The Solar System's Outer Limits
  151. Wandering Photons
  152. Dark energy explained
  153. interplanetary cowpaths
  154. Solar storm near miss
  155. The Most Accurate Theory for Looking into the Past
  156. 200 light years away would current tech detect human civilization
  157. Stephen Hawking Particle escape from Black Holes.?
  158. The Standard Model of Cosmology Changed Today
  159. Cosmic inflation: 'Spectacular' discovery hailed
  160. Is it possible that the sun is revolving around a massive host star???
  161. Star within a star
  162. The infinitely expanding Universe..?
  163. Either my Science teacher has been eating one too many pixie stix or I knew less than I thought
  164. Meteor impacts
  165. Dark Matter mystery solved.
  166. Dark Matter
  167. Gravity as "negative" energy?
  168. Does the Sun rotate?
  169. Gravitation cancelling in curved space?
  170. Is everything really expanding faster the further out we look into space.. or time?
  171. Holographic universe/black hole
  172. Largest telescope to be built in Hawaii, 98 feet diameter
  173. how can we know the age?
  174. Moon Gets Whacked?
  175. Black hole inside a black hole
  176. Dark energy and the expanding universe
  177. Two unrelated questions on the Big Bang and our cosmologic horizon
  178. Human life under a Blue Dwarf Sun?
  179. An odd thought on blackholes & time.
  180. Can Black hole increase the speed of light?
  181. Universe: Finite or Infinite?
  182. Basic question about stars...
  183. A question in relation to the positions of the Sun and Moon in the sky.
  184. Black Hole Instability
  185. Question about Light Year?
  186. Big bang singularity size
  187. Fly By Speed Increment Anomalies ?
  188. Milky Way's thin disk
  189. Time as a thing thoughts
  190. How Many G's On the Surface of the Sun?
  191. What is trajectory Deflection Angle
  192. Happy 10th anniversary opportunity
  193. Stephen Hawking's new theory offers black hole escape
  194. Light speed question (based on my reading so far)
  195. Einstein's Universe
  196. What is Enceladus heat source?
  197. Rosetta spacecraft thread
  198. 7 comets added to 3D simulation of solar system (Siding Spring, Lovejoy, Halley, Panstarrs)
  199. Why do we still see old light?
  200. More black hole questions
  201. Rocket + telescope + light= all the events ever
  202. Centrifugal habitat on the Moon?
  203. The surface of the sun
  204. Asteroid" behind the sun"
  205. Question: Space expansion and observing distant objects from Earth
  206. What are the most common particles in 'outer space vacuum'
  207. Question about an earth-like planet
  208. Earth slowing down?
  209. Paint your starship
  210. What is the universe expanding into?
  211. Question regarding orbital plane regarding extra solar planets
  212. My problems with infinity, the multi-verse & current scientific understanding.
  213. My Theory on how the Universe can Expand so Fast
  214. How far through the life of the Universe are we?
  215. What would happen if there was no 'outer space'?
  216. Does anything determine the orientation of an accretion disc?
  217. Dark matter and it's entity
  218. Which Drive Would You Pick For A Starship?
  219. What Shape Would You Prefer For A Starship And Why?
  220. Is there enough pressure in the center of the moon/mars to create heat?
  221. Earth-Like Planets - Kepler Mission
  222. How many stars/planets did our radio signals reach yet? [ALIENS]
  223. But we are the middle of the universe!
  224. moon vs mars images
  225. mars oddity
  226. Is the universe rotating like the galaxies are?
  227. If the suns mass reduces over time by the way exausting its fuel (MASS)
  228. 13billion-light-years from earth and we can still see the light HOW
  229. Pale Blue Dot - Carl Sagan
  230. The Universe could be older, right ?
  231. Is there REALLY no center to the Universe?
  232. Does a planet loose mass over an extremely long period of time?
  233. Why!, do the Sun and the Earth not colllide?
  234. Dark Matter
  235. Multi-verse Expansion
  236. Does space time cease when inside a black hole
  237. Question about blackholes and whiteholes, and multiverses?
  238. Blackholes and where stars go
  239. Brightest Explosion In the Universe Ever Seen
  240. orbit, i apologise now for the rambling but its one of those days!!
  241. ''Comet of the Century'' begins to brighten... (article)
  242. Relatevistic Acceleration and Intertia ?
  243. do black holes repel each other?
  244. Infinite big bangs happening right now
  245. Is there a way to measure expansion of the universe?
  246. to have forested/if given the right Condition??
  247. Photons? I am doubtful.
  248. Does the existence of Earth disprove infinity?
  249. Yes...another time thread
  250. Does time dilation affect physical aging?