a. Suppose the surface temperature of the Sun were 9000 K instead of 6000 K. How

a. Suppose the surface temperature of the Sun were 9000 K instead of 6000 K. How much more thermal radiation would the Sun emit? What would happen to the Suns wavelength of peak emission? What would happen to life on Earth?b. A sunspot appears only 80 percent as bright as the surrounding photosphere. The photosphere has a temperature of approximately 5780 K. What is the temperature of the sunspot? c. Go to the website: http://solarscience.msfc.nasa.gov/predict.shtml. Where are we in the Sunspot cycle right now? When is the next solar maximum or minimum expected? Recent or live images of the Sun can be found here: http://sdo.gsfc.nasa.gov/data/ are there currently many spots? What is a magnetogram? Why do astronomers want pictures of the Sun at different wavelengths what can be seen? (Note: 1 =0.1 nm = 10-10 m