★ Extinction, astronomy - astronomical objects ..

                                     

★ Extinction (astronomy)

Interstellar extinction is when the electromagnetic radiation of an astronomical object is blocked and / or scattered by other astronomical objects and cosmic dust.

Also known as galactic extinction when the object is in the Milky Way.

                                     
  • have hit Earth 66 million years ago and caused the K T extinction event, including the extinction of all non - avian dinosaurs. Near - Earth asteroid Asteroid
  • because no one technique can measure distances at all ranges encountered in astronomy Instead, one method can be used to measure nearby distances, a second
  • It remained largely unstudied for many years due to high interstellar extinction absorption in its direction. In the future, it will probably evolve
  • caused the Cretaceous Paleogene extinction event. There is debate over whether impacts caused any of the other extinction events throughout history. A giant
  • IV, 97. Alves J Lada C. & Lad, E. 2001. Tracing H2 Via infrared dust extinction Cambridge University Press. p. 217. ISBN 0 - 521 - 78224 - 4. Cite uses deprecated
                                     
  • suggested that a gamma - ray burst in the Milky Way could cause a mass extinction on Earth. No such case is known. Gamma - ray bursts were first observed
  • Observatory. 130 3 167. Bibcode: 2010Obs...130..167H. Plait, Phil 2002 Bad Astronomy Misconceptions and Misuses Revealed, from Astrology to the Moon Landing
  • reliably. Obviously, gas and particles would degrade signals interstellar extinction and there would be limits to the energy available to send the signal
  • of Physics and Astronomy astrophysicist and astrobiologist, researched the large - scale structure of the Universe and mass extinctions Charles D. Michener
  • dinosaurs died 65.5 million years ago, after the Cretaceous Tertiary extinction event, whereas the earliest Homo Genus humans evolved between 2.3 and

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