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Celestial Bodies - Sun & Moon $5...
Celestial Bodies - Sun & Moon $5 2oz gold plated .999 pure silver coin, blue enamel, proof antique finish, high relief.
This beautiful silver coin is part of the new “Celestial Bodies” series and it is dedicated to the Sun and the Moon. The coin features an incredible details. With engraved serial number.
Mintage: Just 500 pieces worldwide. With box and COA.
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|Face Value :||5 Dollars|
|Metal :||.999 Fine silver|
|Weight :||2 oz|
|Size :||50.00 mm|
|Quality :||Proof antique finish|
|Mintage :||Only 500 pcs. worldwide|
|Series :||Celestial Bodies|
|Certificate of Authenticity :||Yes|
|Original ETUI box/case :||Yes|
The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. It is by far the most important source of energy for life on Earth. Its diameter is about 109 times that of Earth, and its mass is about 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System. About three quarters of the Sun's mass consists of hydrogen (~73%); the rest is mostly helium (~25%), with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron.
The Sun is a G-type main-sequence star (G2V) based on its spectral class, and is informally referred to as a yellow dwarf. It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became so hot and dense that it eventually initiated nuclear fusion in its core. It is thought that almost all stars form by this process.
The Sun is roughly middle-aged; it has not changed dramatically for more than four billion years, and will remain fairly stable for more than another five billion years. After hydrogen fusion in its core has diminished to the point at which it is no longer in hydrostatic equilibrium, the core of the Sun will experience a marked increase in density and temperature while its outer layers expand to eventually become a red giant. It is calculated that the Sun will become sufficiently large enough to engulf the current orbits of Mercury, Venus, and probably Earth.
The Earth’s only natural satellite, the Moon is the largest in the solar system relative to the planet it orbits. The second densest after Jupiter’s Io, it’s thought to have formed just after the Earth around 4.5 billion years ago from an impact between a Mars-sized body and the Earth itself.
Set in synchronous rotation with the Earth, always showing its same face, the moon’s gravitational influence produces the ocean tides and is arguably a huge factor in the appearance of life on our planet. The Moon’s current orbital distance is about thirty times the diameter of Earth, causing it to have an apparent size in the sky almost the same as that of the Sun. This allows the Moon to cover the Sun nearly precisely in total solar eclipse. This matching of apparent visual size is a coincidence.
One of the major geologic processes that has affected the Moon’s surface is impact cratering, with craters formed when asteroids and comets collide with the lunar surface. There are estimated to be roughly 300,000 craters wider than 1 km on the Moon’s near side alone. Obviously, this leaves plenty of debris and when a new object impacts the lunar surface, some of that debris is ejected back into space. Occasionaly, it lands on Earth.
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