Ultraviolet image of a solar flare from November 2003

Sun and Space Weather

Explore the Sun, space weather storms, and how they can impact the Earth.

The Sun

The Sun is is the closest star to Earth and is the center of our solar system. The Sun provides Earth with almost all of our planet's energy.

Regions and Features of the Sun

Regions or "parts" of the Sun as well as features and phenomena that appear on the Sun or in its atmosphere.

What is Space Weather?

The Sun provides Earth with life-sustaining heat and light. Magnetic storms from the Sun sometimes bombard Earth, producing the spectacular auroral light shows.


Learn all about sundogs, an optical phenomenon in the atmosphere.

Photographing the Aurora

Only visible at high latitudes, and at certain times, not everyone can see the aurora. However, photographs let us all know what it looks like.

Earth's Magnetosphere

Earth's magnetosphere is like a magnetic "bubble" in space around our planet.

The Sun's Chromosphere (Lower Atmosphere)

The Sun's chromosphere is the lower portion of the solar atmosphere.

Solar Flare

Solar flares are huge explosions on the Sun that emit lots of electromagnetic radiation.

Coronal Mass Ejection (CME)

A Coronal Mass Ejection (CME) is a powerful, explosive "storm" from the Sun. CMEs hurl millions of tons of particle radiation outward into space.