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  1. A time line for astronomy discoveries
  2. Eccentricity to Flattening (oblateness)
  3. Planets on planetary nebulae
  4. Year Equivalence
  5. If Neptune suddenly ceased to exist, would Pluto maintain its orbit?
  6. Have any decent books on the TNOs been published in the last decade?
  7. Antigravity.
  8. matter traveling at half the speed of light
  9. Timeline of early universe
  10. Problem with approaching light speed
  11. Proper motion of stars
  12. Could a black hole become visible?
  13. Inflation theory
  14. Topics to cover in a video about the year?
  15. I don't get leap seconds!
  16. age of far off galaxies.
  17. Grav redshift/blueshift?
  18. Ionized Hydrogen Regions and Light
  19. 5th force questions
  20. Is this the same as vacuum collapse theory
  21. Galaxies 6.9 eons ago
  22. Age of universe
  23. Star above moon
  24. Deneb and Rigel
  25. This does not sound good 😂
  26. What would cause a hypothetical gas giant to look green?
  27. Space Hotel
  28. Interstellar ice
  29. Sound bubbles
  30. Neutronstar merger
  31. Vacuum Collapse Clarification
  32. Hubble constant from deep lensing
  33. Radcliffe wave
  34. Dark flow
  35. Can someone explain the article below in layman terms
  36. Gravitational redshift of high-velocity stars
  37. Tidal effects in a large orbiting habitat
  38. Why do B-type stars have unusually strong stellar winds?
  39. Hubble constant question
  40. Triple BH merger
  41. How big would a multi-generational spaceship really have to be
  42. Moon and Sun in daytime
  43. DM clumping
  44. Supernova
  45. Neutron star merger question
  46. Mars and Humans
  47. What If There was a Super Nova on Alpha Centauri? Or any star 4.3 light years away.
  48. New moon of Venus ?
  49. How do I find the angle between two Galaxies?
  50. The positioning of radio telescopes.
  51. New waves
  52. Space X internet satellite
  53. Sirius neutron star
  54. The Glow Of Liquid Metallic Hydrogen
  55. This article seems alright but not sure how valid it is
  56. Pluto
  57. Stellar age translation
  58. Color and surface of the moon
  59. Tunguska event
  60. Shooting star
  61. Slowly dying universe
  62. Possible planets to visit
  63. Saturn distance to earth
  64. This is amazing pictures from start of universe
  65. Failed supernova
  66. Stephen Hawking last work
  67. White holes and black holes
  68. Betelgeuse weather
  69. Awesome most powerful supernova ever
  70. Unable to understand paper
  71. Dark energy question
  72. How cold could an interstellar object get?
  73. Having trouble with understanding video
  74. When can we expect to see this, happening soon as per nasa
  75. Origin interstellar comets
  76. Black Hole - LB1
  77. I am followed by a light in the sky
  78. Massive gravity - can we test it?
  79. Filaments & structure in interstellar medium
  80. Question about convection in stars
  81. Neutron charge
  82. Can black holes be where some of the missing antimatter is stored?
  83. Centrifuges
  84. [Worldbuilding] Tidal Locking Timescale in Fictional System
  85. Anyone interested in proofreading my Betelgeuse script?
  86. Star formation in intergalactic space?
  87. Aliens
  88. Hubble tension
  89. Polar Ice Melt
  90. Implications of pebble accretion models
  91. Big Bang created lobed universe?
  92. Question about orbital dynamics...torque? r-cubed?
  93. Micro atmospheres?
  94. Heliosphere past/future
  95. What happend before big bang??
  96. How real is general relativity?
  97. Why is Oxygen Emission More Prominent than Nitrogen in Aurorae?
  98. Our place in the universe special?
  99. Is the moon buggy still on the moon?
  100. What is the so-called "dark Universe" theory? Is it unprovable?
  101. High mass high density super Earth
  102. Earth with 1 Gravity, different radii and densities, exoplanet spin-off thread
  103. Umbra and penumbra?
  104. Light reflection from moon if were rotated 180 degrees? (a 'what if' question)
  105. Moon landing in 2024 - how will it work
  106. Will anyone be physically watching JWST?
  107. Book recommendations on the history of astronomy
  108. How does light travel through a non-vacuum?
  109. Quantum gravity?
  110. Starlink Interference
  111. How does the type of a star affect an orbiting planet's Bond albedo?
  112. Electrically charged black holes
  113. Can a neutron star or black hole initiate a type 1a supernova?
  114. Is there a Hubble constant to Hubble time converter?
  115. Sorry to ask. How does mapping the CMB help determine the age of the universe?
  116. How can a single photon create an entire universe?
  117. Was the 21 June 2020 solar eclipse the most viewed ever?
  118. Is the Earth an Organic Distribution Machine??
  119. Electrical Engineering Student, want to learn more about Astrophysics/Astronomy
  120. What are the anthropic constraints on the speed of light?
  121. Why do ice ages end?
  122. Solar system with backward orbiting planet possible?
  123. PBH collides with Sol
  124. Black holes or black holes and dust?
  125. accelerating a star
  126. Time a long time ago and in empty spaces
  127. (143651) 2003 qo104
  128. If The Big Crunch actually does occur...
  129. To what accuracy have we measured the speed of light ?
  130. Perseverance rover
  131. S Antliae
  132. Endothermic and Exothermic
  133. Where have all the quasars gone?
  134. Susy
  135. Milkomeda SMBH(s)
  136. Some questions about asteroids
  137. How far can the sun's light reach?
  138. Kepler's law of periods for our solar system only?
  139. Planet of extreme temperatures and itís effects
  140. Is Dark Matter what is left over from a matter-antimatter annihilation?
  141. Question about the Universe regarding the speed of light.
  142. Event Horizon Shape
  143. Wormhole question, theoretical
  144. The Universe didn't arise from a single point?
  145. Ogo
  146. White Dwarf Structure
  147. Is TESS finding fewer planet candidates than expected
  148. Shell theorem and tide
  149. Nearest Hot Jupiter
  150. How do you reconcile the passage of time with the idea that time is relative?
  151. How far does dark matter extend from the Andromeda galaxy ?
  152. Armor vs nukes
  153. How much does surface pressure contribute to Venus's temperature?
  154. Can iron be fused?
  155. How to tell the difference between a merely hyperbolic comet and an interstellar one?
  156. Question on how many solar eclipses an ancient person would have seen
  157. What would be a good metaphor for the collective motion of belt asteroids or KBOs?
  158. Dark Matter
  159. How common are 'naked eye' 5 planet conjunctions?
  160. Entanglement question
  161. position of the electron
  162. Help identifying type of object in DSS etc imaging
  163. Could they see the SN 1054 progenitor before 7/4/1054?
  164. What are Spectroscopic Galaxy Clustering and Galaxy Photometric Clustering?
  165. What is "space" in the statistical descriptions used in cosmology?
  166. How does spaghettification work?
  167. Decompression - Best Case Scenario Questions
  168. Better metaphor than "hot enough to melt lead"
  169. What diameter does a rotating space station have to be to generate useful gravity
  170. Betelgeuse
  171. Low sunspot - high snowfall correlation