The document provides information about the conditions and characteristics of Mercury, Venus, Mars, Earth, and their moons. Mercury has surface temperatures that can reach 400 degrees Celsius and its conditions are similar to the moon's surface. It has no moons and a rotation of 58.65 days. Venus rotates backwards with a diameter of 12,102 km and no moons. Mars has two moons, a diameter of 6,787 km, and an annual orbit of 1.88 Earth years.