What is the primary effect that the carbon dioxide in Venus' atmosphere has on the planet?
What will be an ideal response?
Question 2
What is the primary reason why a Pluto flyby mission would be cheaper than a Pluto orbiter?
A) The flyby can use less expensive cameras than the orbiter.
B) The flyby is easier to design than the orbiter.
C) The fuel needed for an orbiter to slow down when it reaches Pluto is very expensive in and of itself.
D) The fuel needed for an orbiter to slow down when it reaches Pluto adds a lot of weight to the spacecraft.
E) The question is incorrect; in general, orbiters are cheaper than flybys.
