Moon Sun Heaven Earth (~Markus~)

The MOON is Earth‘s only natural satellite. The average center-to-center distance from the Earth to the Moon is 384,403 kilometres (238,857 miles), which is about 30 times the diameter of the Earth. The Moon has a diameter of 3,474 kilometres (2,159 miles) — slightly more than a quarter that of the Earth. This means that the volume of the Moon is only 1/50th that of Earth. The gravitational pull at its surface is about a 1/6th of Earth's. The Moon makes a complete orbit around the Earth every 27.3 days, and the periodic variations in the geometry of the Earth–Moon–Sun system are responsible for the lunar phase that repeat every 29.5 days. The gravitational attraction, and the centrifugal forces generated by the rotation of the Moon and Earth around a common axis, the barycentre, is largely responsible for the tides on Earth. The energy dissipated in generating tides is directly responsible for the reduction in potential energy in the Moon-Earth orbit around the barycentre, resulting in a 3.8 cm yearly increase in the distance between the two bodies. The Moon will continue to move slowly away from the Earth until the tidal effects between the two are no longer of significance, whereupon the Moon's orbit will stabilize. The Moon is the only celestial body that humans have travelled to and landed on. The Moon has no formal English name, although it is occasionally called Luna (Latin for "moon") to distinguish it from the generic "moon" (referring to any of the various natural satellites of other planets). Its astronomical symbol is a crescent (?). The related adjective for the Moon is lunar (from the Latin root), or the adjectival prefix seleno- or suffix -selene (as in the Greek deity Selene). The word moon is Old English from older Germanic origins, with links back to Latin mensis, and back further to the PIE root of me- as in measure (time), with reminders of its importance in measuring time in words derived from it like Monday, month and menstrual.
The SUN (Latin: Sol) is the star at the center of the Solar System. The Earth and other matter (including other planets, asteroids, meteroids, comets and dust) orbit the Sun, which by itself accounts for about 99.8% of the solar system's mass. Energy from the Sun—in the form of sunlight—supports almost all life on Earth via photosynthesis, and drives the Earth's climate and weather. The Sun is composed of hydrogen (about 74% of its mass, or 92% of its volume), hrlium (about 25% of mass, 7% of volume), and trace quantities of other elements. The Sun has a spectral glass of G2V. G2 implies that it has a surface temperature of approximately 5,500 K (or approximately 9,600 degrees Fahrenheit / 5,315 Celsius), giving it a white color which, because of atmospheric scattering, appears yellow as seen from the surface of the Earth. This is a subtractive effect, as the preferential scattering of blue photons (causing the sky color) removes enough blue light to leave a residual reddishness that is perceived as yellow. (If low enough in the sky, the Sun appears orange or red, due to this scattering.) Its spectrum contains lines of ionized and neutral metals as well as very weak hydrogen lines. The V suffix indicates that the Sun, like most stars, is a main sequence star. This means that it generates its energy by nuclear fusion of hydrogen nuclei into helium and is in a state of hydrostatic balance, neither contracting nor expanding over time. There are more than 100 million G2 class stars in our galaxy. Because of logarithmic size distribution, the Sun is actually brighter than 85% of the stars in the galaxy, most of which are red dwarfs. The Sun orbits the center of the Milky Way galaxy at a distance of approximately 26,000 light-years from the galactic center, completing one revolution in about 225-250 million years. The orbital speed is 217 km/s, equivalent to one light-year every 1,400 years, and one AU every 8 days.
HEAVEN may refer to the physical heavens, the Earths atmosphere, the solar system or the seemingly endless expanse of the universe beyond, though it is generally spoken of as a plane of existence (sometimes held to exist in our own universe) in religions and spiritual philosophies, typically described as the holiest possible place, accessible by people according to various standards of divinity (goodness, piety, etc.) Christians generally hold that it is the afterlife destination of those who have accepted Jesus Christ as their savior. In unusual instances, humans have claimed, according to many testimonies and traditions, personal knowledge of Heaven.
EARTH is the third planet from the Sun and is the largest of the terrestial planets in the Solar Sytsem, in both diameter and mass. Home to myriad species including humans, it is also referred to as "the Earth", "Planet Earth", "Gaia", "Terra", and "the World". The Earth is the first planet known to have liquid water on the surface and is the only place in the universe known to harbor life. Earth has a magnetic field that, together with a primarily nitrogen-oxygen atmosphere, protects the surface from radiation that is harmful to life. The atmosphere also serves as a shield that causes smaller meteors to burn up before they strike the surface. The Earth formed around 4.57 billion years ago and its only known natural satellite, the Moon, began orbiting it around 4.53 billion years ago. At present, the Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis (which is equal to 365.26 solar days). The Earth's axis of rotation is tilted 23.5° (away from the perpendicular to its orbital plane), producing seasonal variations on the planet's surface. Atmospheric conditions on Earth have been significantly altered by the presence of life forms, which create an ecological balance that modifies the surface conditions. About 71% of the surface is covered with salt-water oceans. The remaining 29% consists of continents and islands. The planet's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid-iron inner core. Earth interacts with outer space to a significant degree. Its relatively large moon provides ocean tides, stabilizes the axial tilt and has gradually modified the length of the planet's rotation period. A cometary bombardment during the early history of the planet played a role in the formation of the oceans. Later, asteroid impacts caused significant changes to the surface environment. Long term periodic changes in the orbit of the planet are believed to have caused the ice ages that have covered significant portions of the surface in glacial sheets.