The following uses the more usual "circled-plus" symbol for Earth.

>>> print('    Sun: \u2609', 'Mercury: \u263F', '  Venus: \u2640',
          '  Earth: \u2295', '   Mars: \u2642', 'Jupiter: \u2643',
          ' Saturn: \u2644', ' Uranus: \u26E2', 'Neptune: \u2646',
          sep='\n')
    Sun: ☉
Mercury: ☿
  Venus: ♀
  Earth: ⊕
   Mars: ♂
Jupiter: ♃
 Saturn: ♄
 Uranus: ⛢
Neptune: ♆

(You may or may not see these symbols printed correctly in your browser depending on which fonts you have installed.)