Answers created by ccrowe1

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• What are the advantages and disadvantages of radio telescopes?
  
• Question #5600e
  
• What is the life cycle of a supermassive star?
  
• What was the first space telescope built by NASA?
  
• In a main sequence star the gravity of the core is balanced by the outward pressure of the heat created by fusion of hydrogen atoms, maing it stable. So when the hydrogen is used up, does the star expand to form a red giant because the outward pressure?
  
• The mass of the moon is 7.36×1022kg and its distance to the Earth is 3.84×108m. What is the gravitational force of the moon on the earth? The moon's force is what percent of the sun's force?
  
• Why do cepheid variables pulse and how does this pulsate help calculate distance?
  
• Why are uranus and Neptune called the ice giant planets?
  
• What is the differences of electrostatic and electromagnetic force?
  
• Are red giants, white dwarfs, and blue giants part of the same cycle?
  
• Question #36969
  
• What is a spectrum and how are spectra used in astronomy?
  
• A star has a surface temperature of 12,000 K. At what wavelength does its blackbody curve peak?
  
• How does a star rotation affect the appearance of its spectral lines?
  
• Which planet do most exoplanets that we have discovered resemble?
  
• Why does a massive star turn into a red super giant?
  
• How do you solve #0.7z+1.9+0.1z=5.5-0.4z#?