This study examines the planetary oppositions of Mercury, which occur when the planet is in direct opposition to the Sun as seen from Earth. It will explore the effects of these oppositions on the planet's orbit, its atmosphere, and its magnetic field. It will also look at the impact of
Mercury is the first planet from the Sun and the smallest in the Solar System. It is a rocky planet with a trace atmosphere and a surface gravity slightly higher than that of Mars. The surface of Mercury is similar to Earth's Moon, being cratered, with an expansive rupes system generated from thrust faults, and bright ray systems, formed by ejecta. Its largest crater, Caloris Planitia, has a diameter of 1,550 km (960 mi), which is about one-third the diameter of the planet. Being the most inferior orbiting planet, it always appears close to the Sun in Earth's sky, either as a "morning star" or an "evening star". It is the planet with the highest delta-v required for travel from Earth, as well as to and from the other planets in the Solar System.