Here are my planet and solar system classes.

planet.rb

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+# Solar System 2.22.16 Justine Winnie
+# Let's make a planetary system!
+#
+# Baseline
+# Create a Planet class with a name attribute.
+# You should be able to instantiate a new Planet object with an associated name.
+
+#Wave 1
+# Give each instance of Planet at least five attributes.
+# Allow these attributes to be set using a hash in initialize.
+
+#Additionals
+# Give each planet a rate of solar rotation
+# Give each planet a @distance_from_the_sun attribute
+# Write a program that asks for user input to query the planets:
+# First, ask the user to select a planet they'd like to learn about.
+# Present the user with a list of planets from which they can choose. Something like:
+# 1. Mercury, 2. Venus, 3. Earth, 4. Secret Earth, 5. Mars, 6. Jupiter, ... 13. Exit
+# Provide the user with well formatted information about the planet (diameter, mass, number of moons, primary export, etc.)
+# Then ask the user for another planet.
+
+# Wave 2
+# Create a SolarSystem class that has an attribute planets that has zero to many Planet instances.
+#There are a few different options for how to associate the planets with your solar system:
+# Initialize the list of planets in the constructor of the solar system
+# Create a method that adds a single planet to a solar system
+# Create a method that adds a list of planets to the existing list of planets
+
+
+class Planet
+  def initialize(planetdata)
+    @name = planetdata[:name] #string
+    @presence_of_water = planetdata[:water] #Boolean
+    @taco_tuesday = planetdata[:taco_tuesday] #Boolean
+    @atmosphere = planetdata[:atmosphere] #string
+    @avg_temperature = planetdata[:avg_temperature] #float
+    @solar_rotation = planetdata[:solar_rotation] #float
+    @distance_from_the_sun = planetdata[:distance_from_the_sun] #float - expressed in miles because AMERICA
+  end
+
+  def taco_please
+      puts @taco_tuesday
+  end
+
+  def name
+    puts @name
+  end
+end
+
+earth = Planet.new(name: "earth", taco_tuesday: "hells yes", distance_from_the_sun: 93000000)
+mars = Planet.new(name: "mars", taco_tuesday: "no", distance_from_the_sun: 141633260)
+unicornia = Planet.new(name: "unicornia", avg_temperature: "delightful", distance_from_the_sun: "pink clouds")
+
+allplanets = [earth, mars, unicornia]
+
+class SolarSystem
+  def initialize
+    @planets = []
+  end
+
+  def add_planet
+    puts "What planet do you want to add?"
+    planetoadd = gets.chomp
+    @planets << planetoadd
+  end
+
+  def add_array(thearray)
+    @planets.push(thearray)
+    @planets.flatten
+  end
+end
+
+# def list_planets
+#     @planets.each do
+#       puts @planets[:name]
+#     end
+# end
+
+  # def add_planet_list
+  #   puts "Enter a planet you'd like to add and hit enter."
+  #   planet = gets.chomp
+  #
+  #   until planet.include? "All done!"
+  #   puts "Enter another planet to add, followed by the enter key. If you're done, enter 'All done!'"
+  #     planet = gets.chomp
+  #     @planets << planet
+  #   end