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- At least one killed as two stunt planes crash mid-air in front of horrified onlookers at Portugal’s Beja Air Show
- Rob Burrow dead at 41: Former England rugby star passes away after brave battle with motor neurone disease
- Police officer, 29, dies after being stabbed in head during frenzied knife attack at Mannheim anti-Islam rally
- Knifeman who killed police officer & injured five at anti-Islam rally is dad-of-two who ‘radicalised’ over the last year
- Mystery as man’s body found in water near popular Greek beach with 10kg barbell tied to his leg as cops launch probe
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.
- 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.
Learn about the Sun, the star at the heart of our solar system, and its connection and interactions with Earth. Explore the Sun's 3D world, past and future missions, eclipse safety, and pop culture references.
May 26, 2024 · Sun, star around which Earth and the other components of the solar system revolve. It is the dominant body of the system, constituting more than 99 percent of its entire mass. The Sun is the source of an enormous amount of energy, a portion of which provides Earth with the light and heat necessary to support life.
Sep 15, 2018 · Learn about the sun's characteristics, life cycle, and effects on Earth and the solar system. Find out how the sun produces energy, light, heat, and space weather, and what will happen when it dies.
