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Nov 26, 2021 · Sun is the name we use for the star at the center of our Solar System. It is the star we see rising in the East in the morning and the one that bathes our planet’s surface with heat. So yes, the Sun is a star. However, not all stars are suns.
- Our Sun is a star, like the hundreds that you see at night, only much, much closer. The Sun is a huge ball of hot, churning, unpredictable supercharged gasses called plasma.
- The Sun is like an onion: it has layers. Although the Sun doesn’t have a solid surface like Earth, it does have six layers, each one with a different density of plasma.
- The Photosphere. The photosphere is what you see when you look up at the Sun. (Always use “eclipse glasses” to do this!) It’s the visible surface of the Sun, not a solid surface like on planets.
- The Chromosphere. Sandwiched between the visible photosphere and the corona is the gorgeous chromosphere. Wild magnetic fields formed in the photosphere extend out through the chromosphere, creating eruptions and storms, prominences and flares.
Jun 3, 2021 · Key Takeaways. The simplest questions are often the hardest to answer. At first blush, the sun and stars are very different. The former is close and hot, the latter far away and cold. We couldn’t...
- Adam Frank
Feb 16, 2024 · Website Little Astronomy states: “Using the term sun to refer to any other star is incorrect. Sun is not a synonym for star.” However, language changes with usage.
- Stephen Luntz
- Composition. The sun is made up of a blazing combination of gases. These gases are actually in the form of plasma. Plasma is a state of matter similar to gas, but with most of the particles ionized.
- Electromagnetic Radiation. The sun’s energy travels to Earth at the speed of light in the form of electromagnetic radiation (EMR). The electromagnetic spectrumexists as waves of different frequencies and wavelengths.
- Evolution of the Sun. The sun, although it has sustained all life on our planet, will not shine forever. The sun has already existed for about 4.5 billion years.
- Sun’s Structure. The sun is made up of six layers: core, radiative zone, convective zone, photosphere, chromosphere, and corona. Core. The sun’s core, more than a thousand times the size of Earth and more than 10 times denserthan lead, is a huge furnace.
The Sun is about 100 times wider than Earth and about 10 times wider than Jupiter, the biggest planet. The Sun is the only star in our solar system. It is the center of our solar system, and its gravity holds the solar system together.
Jun 29, 2022 · While the Sun is technically a variable star, the energy output over the course of an 11-year solar cycle changes by only 0.1%. Compared to some other types of stars, the Sun is stable in other ways, too.
