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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.
The Sun is the star at the heart of our solar system. Its gravity holds the solar system together, keeping everything — from the biggest planets to the smallest bits of debris — in its orbit.
Learn about the Sun, the star at the center of our solar system, its size, temperature, structure, and history. Find out how the Sun affects Earth and other planets, and how it will change in the future.
2 de feb. de 2024 · Learn about the sun, an ordinary star that provides heat and light for life on Earth. Find out how the sun is composed, how it affects Earth, and how it will change in the future.
Hace 2 días · The Sun is classified as a G2 V star, with G2 standing for the second hottest stars of the yellow G class—of surface temperature about 5,800 kelvins (K)—and the V representing a main sequence, or dwarf, star, the typical star for this temperature class.
10 de mar. de 2008 · The Sun, an average-sized, middle-aged star, formed almost 5 billion years ago from a cloud of gas and dust. By Astronomy Staff | Published: March 10, 2008 | Last updated on May 18, 2023. The...
18 de oct. de 2023 · Learn about the Sun, our closest star, and its composition, temperature, age, size, and future. Find out how it affects Earth and what happens during a solar eclipse.
