First planet

• Earth
• Eighth planet (disambiguation)
• Eleventh planet
• Fifth planet (disambiguation)
• Fourth planet (disambiguation)
• Mercury (planet)
• Moon
• Ninth planet (disambiguation)
• Second planet (disambiguation)
• Seventh planet (disambiguation)
• Sixth planet (disambiguation)
• Tenth planet (disambiguation)
• Third planet (disambiguation)
• Twelfth planet (disambiguation)
• Vulcan (hypothetical planet)
• human species