Mercury 2

Mercury Mercury is the eighth largest planet in our solar system, equaling roughly one-third of Earth’s size. It is also the planet closest to the sun, and is often visible with binoculars, or even the naked eye. It’s difficult to see in the twilight sky. One of Mercury’s most distinguishable features is its rugged surface, which is similar to the surface of the Earth’s moon. In Roman mythology, Mercury is the …showed first 75 words of 526 total…

…showed last 75 words of 526 total…is composed primarily of iron, and that it makes up about seventy-five per cent of the planet. Further support for this lies in the fact that Mercury was discovered to generate a magnetic field. Earth's magnetic field is formed by its liquid iron core, so scientists believe that this may generate Mercury's, too. Mariner 10 only photographed part of Mercury, but scientists believe that there is no reason to think that the remainder is any different.