A more readable version of Aaron Patterson's moon tweet. https://twitter.com/tenderlove/status/435590528025899008

moon.rb

moon_id=0x1F311
loop do
  8.times do |i|
    delete = ("\b"*6)
    moon = [moon_id+i].pack("U")
    spaces = (" "*5)
    line = delete + moon + spaces
    print(line)
    sleep(0.1)
  end
end