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The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere 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.
- Solar radius
695,700 kilometres (432,300 miles) is approximately 10 times...
- Solar radius
695,700 kilometres (432,300 miles) is approximately 10 times the average radius of Jupiter, 109 times the radius of the Earth, and 1/215th of an astronomical unit, the approximate distance between Earth and the Sun.
This list contains a selection of objects estimated to be between 100 and 199 km in radius (200 and 399 km in diameter). The largest of these may have a hydrostatic-equilibrium shape, but most are irregular.
The Sun is the largest object in our solar system. Its diameter is about 865,000 miles (1.4 million kilometers). Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest bits of debris in orbit around it.
21 sty 2022 · The total volume of the sun is 1.4 x 10 27 cubic meters. About 1.3 million Earths could fit inside the sun, according to NASA's statistics.
General Characteristics. The Sun, a G-type main-sequence star, accounts for approximately 99.86% of the Solar System's mass. With an absolute magnitude of +4.83, it is believed to be brighter than around 85% of the stars in the Milky Way, which mainly consist of red dwarfs. Classified as a Population I star, the Sun is rich in heavy elements.
21 sty 2024 · What is the solar diameter in SI units? Google tells me this is 1.3927 Gm. How accurate is that figure? I am looking for estimates with referenced data and calculations, and the uncertainties: due to measurement. due to variation in shape. due to short term variations in time over different time periods.
