Mercury is the nearest planet to the Sun and the second smallest in the Solar System

• The small and rocky planet
• Mercury is the closest planet to the Sun
• Mercury completes a trip around the Sun every 88 days, speeding through space at nearly 50 km per second, faster than any other planet. Because it is so close to the Sun, temperatures on its surface can reach a scorching 467 degrees Celsius.
• Nighttime temperatures can drop to a frigid -183 degrees Celsius
  
  

  Orbit: 57,910,000 km (0.38 AU) from Sun Diameter: 4,880 km Mass: 3.30e23 kg

  
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