Sun - Wikipedia
Sun ... The Sun is the star at the centre 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 …
Sun: Facts - NASA Science
Apr 22, 2025 · 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. Everything in our solar system revolves around it – the …
Sun | Definition, Composition, Properties, Temperature, & Facts ...
2 days ago · 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: Facts about the bright star at the center of the solar system ...
Jun 6, 2025 · The sun is the star at the center of our solar system. It's the largest, brightest and most massive object in the solar system, and it provides the light and heat that life on Earth depends on.
Sun Unleashes Strongest Solar Flare of 2025 From Sunspot AR4274
Nov 12, 2025 · The sun produced its strongest solar flare of 2025, an X5.1-class eruption from sunspot AR4274 triggering severe radio disruptions across continents. The major event erupted November …
What Is the Sun Made Of? Understanding the Star at the Center of Our ...
6 days ago · A clear guide to what the sun is made of, explaining sun composition, solar structure, and how space science uncovers the elements and layers powering our star.
NASA confirms X1.9 solar flare hits Earth within 96 hours—millions …
The X1.9 Eruption: Eight Minutes to Radio Blackout On the evening of November 30, the Sun released an X1.9-class solar flare from its northeastern edge, discharging energy equivalent to millions ...
The Sun, our Solar System’s star | The Planetary Society
We study the Sun to learn about how stars work, and to help protect our civilization from solar storms. Where did the Sun come from? The Sun formed 4.6 billion years ago from a gigantic collapsing cloud …
A Lost Spacecraft Came Back and Changed How We See the Sun
Dec 2, 2025 · For thirty years, SOHO has delivered an unprecedented, nearly unbroken view of the Sun, surviving multiple near-catastrophic failures and becoming a cornerstone of modern solar science. Its …
Sun - NASA Science
Nov 25, 2025 · 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.