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Sun - Wikipedia. The Sun is the star at the center of the Solar System. It is a massive, hot ball of plasma, inflated and heated by energy produced by nuclear fusion reactions at its core. Part of this energy is emitted from its surface as light, ultraviolet, and infrared radiation, providing most of the energy for life on Earth.
- 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.
Weather. Time Zone. DST Changes. Sun & Moon Today Sunrise & Sunset Moonrise & Moonset Moon Phases Eclipses Night Sky. Moon: 96.7% Waxing Gibbous. Day and Night World Map. Where is the Sun directly overhead right now? Today's Sun Position in Ashburn. Rise. 7:07 am. 88°E. Meridian. 1:16 pm. 180°S. Set. 7:25 pm. 273°W.
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 we study it with spacecraft and telescopes.
Directions based on true north. Astronomy API. Query the position of Sun & Moon, get the times for events like sunrise and sunset. Need some help? Calculations of sunrise and sunset in Ashburn – Virginia – USA for March 2024.
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1 day ago · What time is the solar eclipse on April 8? The eclipse will begin in Texas at 1:27 p.m. CDT and end in Maine at 3:35 p.m. EDT, but the exact time of the eclipse varies by where you are in its path.
What to expect on April 8, 2024. The buildup to the total solar eclipse of April 8 continues to grow, as millions of Americans prepare to be wowed by the cosmic alignment of Earth, moon and sun ...