When the chromosphere can be seen during a solar eclipse, it appears :

When the chromosphere can be seen during a solar eclipse, it appears
 
  A) invisible.
  B) violet.
  C) blue.
  D) yellow.
  E) red.

Question 2

Which of these is NOT typical of a condensing protostar?
 
  A) magnetic fields producing polar flows
  B) dusty disks around their equators
  C) Herbig-Haro objects projecting a light year out in space
  D) fusion of helium into carbon in their cores
  E) more infrared than visible light given off from the cocoon of dust around the star

Question 3

The spiral structure of the Milky Way is best revealed by ________ cm radio observations of HI regions.
 
  Fill in the blank(s) with correct word

Question 4

What are the important relics of the lepton epoch? Why are they important?
 
  What will be an ideal response?