Which feature of Neptune's atmosphere has disappeared since the Voyager 2 fly-by?
a. white methane clouds
b. Great Dark Spot
c. belt-zone circulation
d. Great Red Spot
e. its bluish hue
Question 2
What did Le Verrier and Adams do differently than Herschel when they discovered Neptune?
a. found the planet by scanning thousands of photographic plates
b. found the planet by accident by simply searching the sky
c. applied the basic laws of physics to discover Neptune's position
d. applied a newly modified telescope to find the position of Neptune
e. witnessed the parallax of Neptune and calculated its position