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 …

SpaceWeatherLive.com is a near live website where you can follow space weather from the Sun to Earth and know exactly when you can see aurora. More info...

2024年12月3日 · SDO studies how solar activity is created and drives space weather, by monitoring the Sun’s interior, atmosphere, magnetic field, and energy output.

2025年2月3日 · The Sun. 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 …

2025年2月13日 · Our Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million …

2013年6月20日 · Check out some pictures of our Sun in the NASA Solar System Exploration Sun gallery. What Is Space Weather? What Is the Solar Cycle? Get up close and personal with our …

2 天之前 · NOTICE: SDO/HMI Continuum and SDO/HMI Magnetogram image outage due to a cooling water line burst in the Joint Science Operations Center (JSOC) at Stanford University …

2025年2月25日 · The Sun blew out a coronal mass ejection along with part of a solar filament over a three-hour period (Feb.... The dark region seen on the face of the sun at the end of …

Current solar images and links to resources for solar imagery. Helioviewer.org is an open-source project for the visualization of solar and heliospheric data. It has an easy to use interface …

SDO is designed to help us understand the Sun's influence on Earth and Near-Earth space by studying the solar atmosphere on small scales of space and time and in many wavelengths …