Sol is also used by planetary astronomers to refer to the duration of a solar day on another planet, such as Mars.
It contains more than It is often said that the Sun is an "ordinary" star. The median size of stars in our galaxy is probably less than half the mass of the Sun.
The Sun is personified in many mythologies: This changes slowly over time as the Sun converts hydrogen to helium in its core. The outer layers of the Sun exhibit differential rotation: This odd behavior is due to the fact that the Sun is not a solid body like the Earth.
Similar effects are seen in the gas planets. The differential rotation extends considerably down into the interior of the Sun but the core of the Sun rotates as a solid body. The temperature is As it travels out toward the surface, the energy is continuously absorbed and re-emitted at lower and lower temperatures so that by the time it reaches the surface, it is primarily visible light.
The surface of the Sun, called the photosphere, is at a temperature of about K.
Sunspots are "cool" regions, only K they look dark only by comparison with the surrounding regions. Sunspots can be very large, as much as 50, km in diameter. A small region known as the chromosphere lies above the photosphere. The highly rarefied region above the chromosphere, called the corona, extends millions of kilometers into space but is visible only during a total solar eclipse left.
Temperatures in the corona are over 1, K.
It just happens that the Moon and the Sun appear the same size in the sky as viewed from the Earth. When it lines up perfectly the entire solar disk is blocked and it is called a total eclipse of the Sun.
The sun lies at the heart of the solar system, where it is by far the largest object. It holds percent of the solar system's mass and is roughly times the diameter of the Earth — about. Atapa Snana is the yogic phrase for the healing science of sun bathing. We live in a modern world that is bombarded with paranoid messages about how dangerous the sun is. We should remember that the ancient yogis and many other cultures knew how to use the sun to heal all kinds of illnesses, and. When using an attenuating filter to view the Sun, the viewer is cautioned to use a filter specifically designed for that use. Some improvised filters that pass UV or IR rays, can actually harm the eye at high brightness levels.
Partial eclipses are visible over a wide area of the Earth but the region from which a total eclipse is visible, called the path of totality, is very narrow, just a few kilometers though it is usually thousands of kilometers long.
Eclipses of the Sun happen once or twice a year. But since the path of totality is so small it is very unlikely that it will cross you home. So people often travel half way around the world just to see a total solar eclipse.
To stand in the shadow of the Moon is an awesome experience.The Sun, at the heart of our solar system, is a yellow dwarf star, a hot ball of glowing gases. Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest particles .
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