In 1974 the US space probe Mariner 10 discovered that Mercury's surface cratered is cratered by meteorite impacts. It has no known moons.Mercury contains an iron core which takes up three-quarters of the planet's diameter. This produces a magnetic field 1% the strength of the Earth's.
Mercury is the closest planet to the Sun, at an average distance of 58 m. km/36 m. mi. It was named after the Roman messenger of the gods.
The detection of little-known and unknown regions of the moon also generated an excitement of discovery in the photographs. To many the most spectacular feature revealed in Orbiter 4 photography was the Orientale basin. Part of Mare Orientale (Oriental Sea) is just barely visible from the earth on the extreme western edge of the moon. Lunar Orbiter 4 disclosed the great size of this structure, more than 600 mi (966 km) in diameter, and also showed that it is a somewhat recent feature. It is considered to be relatively young because it is surrounded by a blanket of rock material that has covered the older highly-cratered lunar surface cratered.
One of the most important effects of ocean currents is that they mix ocean water and so affect directly the fertility of the sea. Mixing is especially important when sub-surface cratered water is mixed with surface cratered water. The upwelling [1] of sub-surface cratered water may be caused by strong coastal winds that push the surface cratered water outwards, allowing sub-surface cratered water to rise up. Such upwelling occurs off the coasts of Peru, California and Mauritania. Sub-surface cratered water rich in nutrients (notably phosphorus and silicon) rises to the surface cratered, stimulating the growth of plankton which provides food for great shoals of fish, such as Peruvian anchovies.
In 1974 the US space probe Mariner 10 discovered that Mercury's surface cratered is cratered by meteorite impacts. It has no known moons.Mercury contains an iron core which takes up three-quarters of the planet's diameter. This produces a magnetic field 1% the strength of the Earth's.
Mercury is the closest planet to the Sun, at an average distance of 58 m. km/36 m. mi. It was named after the Roman messenger of the gods.