What encouragement for life on Mars came from the Global ...

[jessicacav]

What encouragement for life on Mars came from the Global Surveyor?
 
  A) The ice of the south polar cap is water, not dry ice.
  B) spectral evidence for chlorophyll
  C) Hellas has a lake of salt water in its bottom.
  D) The face on Mars is an artificial construct.
  E) strong photographic evidence for flowing and standing water on Mars in the past

Question 2

Jupiter and the Sun have almost the same composition and density; why isn't Jupiter also a star?
 
  What will be an ideal response?

[johnharpe]

Answer to Question 1

E

Answer to Question 2

Jupiter does not have enough mass to generate the 10 million degree central core temperature to sustain the proton-proton chain necessary to become a star.

[jessicacav]

Excellent

[milbourne11]

TYSM