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Mar 16, 2022 · The sun is a yellow dwarf star in the center of the solar system, and it is the largest, brightest and most massive object in the system. The sun formed around 4.5 billion years ago. At that time ...
The Sun is the star at the center of the Solar System. It is a massive, nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
May 6, 2024 · The Sun contains almost ALL of the material in our solar system. 99% of it. All the planets, asteroids and comets add up to less than 1% of the total. The Sun is so far away that it takes light about 8 minutes and 20 seconds for it to get to us – and light is the fastest thing in the universe.
The solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, Haumea, Makemake, and Eris. The inner, rocky planets are Mercury , Venus , Earth, and Mars. These worlds also are known as terrestrial planets because they ...
Solar Atmosphere. Surface Gas Pressure (top of photosphere): 0.868 mb Pressure at bottom of photosphere (optical depth = 1): 125 mb Effective temperature: 5772 K Temperature at top of photosphere: 4400 K Temperature at bottom of photosphere: 6600 K Temperature at top of chromosphere: ~30,000 K Photosphere thickness: ~500 km Chromosphere ...
Jan 23, 2013 · Anatomy of the Sun – from Mysteries of the Sun. Image of the Sun with cut-away portion showing the solar interior with text descriptions of the regions as follows (from inner-most to outer-most): The Sun’s Core – Energy is generated via thermonuclear reactions creating extreme temperatures deep within the Sun’s core. The Radiative Zone ...
Sun, Star around which the components of the solar system revolve. It is about 4.6 billion years old and is the dominant body of the system, with more than 99% of its mass. It converts about 4.5 million tons of matter into energy every second by nuclear fusion reactions in its core, producing neutrinos and solar radiation.
