Answers created by notafraid

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• What is the reason behind the glowing of meteors?
  
• What are the three classifications of asteroids and how do they differ?
  
• Copernicus, Galileo, Kepler, and Newton all supported which idea from the Scientific Revolution?
  
• Question #e35a8
  
• Suppose you suspected a certain object in the sky to be a quasar. What observations would you need to confirm your hypothesis?
  
• I've seen that Anaxagoras (500 BCE–428 BCE) was the first to propose that the Moon reflects the Sun's light, but when was that assertion first scientifically proven, and who did it?
  
• Why did greek philosophers/astronomers conclude that heavens were made up of spheres moving at a constant speed?
  
• Question #9676e
  
• Are red giants cooler than when they were main sequence stars?
  
• Question #8c879
  
• What is the name of the nearest star to Earth that is a main sequence star please?
  
• What are quasars, pulsars, and radio waves in space?
  
• Are cepheid variable stars brighter than the sun?
  
• How many stars make up a globular cluster?
  
• How does our Sun compare to the majority of the bright stars on the HR diagram?
  
• Referring to the H-R Diagram, how can the sun be described in terms of actual (absolute) magnitude, temperature, color and spectral class?
  
• Which elements are formed during the red supergiant stage of a big star?
  
• Which is the most distant: a M main-sequence star or an M giant star?
  
• Why is electromagnetic radiation important?
  
• How would you describe the formation of our Sun from nebula to main sequence?
  
• How does the Hubble Space Telescope affect society?
  
• What causes the pulsation of a cepheid-type variable star?
  
• How do supermassive black holes work?
  
• What percentage of supernovas destroy other stars in a multiple star system?
  
• When will we leave the galaxy?
  
• How would you briefly explain the structure of the earth?
  
• How do clusters of stars form?
  
• How do clusters of stars form?
  
• How are cepheid variables related to the instability strip?
  
• Question #3249b
  
• What is a white dwarf made of and how does it support its own weight? Does its temperature make any difference? What will eventually happen to a white dwarf?
  
• What is the origin of a star cluster, quasars, and pulsars?
  
• How are accretion disks detected?
  
• Do black holes ever go away?
  
• What is the lithosphere composed of?
  
• Which type of star has the coolest surface temperatures?
  
• How galaxies formed and classified?
  
• What would happen to water in a black whole?
  
• How do astronomers know the universe is still expanding instead of rotating towards a central high density object?
  
• How do you read a H-R diagram?
  
• What separates the galaxies from each other?
  
• What is the temperature of a nebula?
  
• Question #ad590
  
• What are the important components of a quasar's structure?
  
• What stops the stars that make the galaxy from just straying off on their own? How does eveyrthing stay together?
  
• Question #bf3d9
  
• How is space measured?
  
• How does a star form from a nebula?
  
• When did astronomy begin?
  
• How do we know what the earth interior is made of?
  
• Which types of stars have the longest lives?
  
• How does a super nova form?
  
• How are galaxies, clusters, and nebulas different?
  
• What was important about the Copernican revolution?
  
• What was the Copernican view of the universe? How did it differ from Ptolemy's? Why was it so controversial?
  
• How is a protostar different from a star?
  
• What are the significant differences between the life and eventual fate of a massive star and an average-sized star such as the sun?
  
• When was astronomy first founded?
  
• What happens to that mass once it goes into the hole and why can't we see it anymore?
  
• Question #584c9