# http://nssdc.gsfc.nasa.gov/planetary/factsheet/planet_table_ratio.html

mercury = { 'name': 'Mercury', 'mass': 0.6, 'distance': 0.4, 'moons': 0 }
venus = { 'name': 'Venus', 'mass': 0.8, 'distance': 0.7, 'moons': 0 }
earth = {  'name': 'Earth', 'mass': 1, 'distance': 1, 'moons': 1 }
mars = { 'name': 'Mars', 'mass': 0.1, 'distance': 1.5, 'moons': 2 }
jupiter = { 'name': 'Jupiter', 'mass': 317.8, 'distance': 5.2, 'moons': 67 }
saturn = { 'name': 'Saturn', 'mass': 95.2, 'distance': 9.6, 'moons': 62 }
uranus = { 'name': 'Uranus', 'mass': 14.5, 'distance': 19.2, 'moons': 27 }
neptune = { 'name': 'Neptune', 'mass': 17.1, 'distance': 30.1, 'moons': 14 }

planets = [mercury, venus, earth, mars, jupiter, saturn, uranus, neptune]

# Write code that will answer the following questions:
# ----------------------------------------------------

# How many planets are there?



# How many moons revolve around Jupiter?



# How many moons are there in our solar system?



# Display all of the planet names in alphabetical order
