Mercury

Mercury is the smallest planet in the solar system bearly larger than the moon and smaller than Jupiter and Saturn's moons. Mercury was once known to be 2 separate stars. Mercury is only 48 million miles from the Earth. Mercury is the most diffucult of the 8 planets to reach. A year for Mercury is about 88 days making it faster thn any other planet but a single day is about 59 days. It's core has more iron than any other major planet in the solar system. The Core of mercury makes 42% of the planet. 1 crater on mercury is 800 miles diameter