Educational Guide

Space Weather

Learn what space weather is, why it matters, and how scientists study it. Space weather is not scary — it is fascinating science that affects our world every day.

Current Space Weather Status

Geomagnetic ActivityQuiet

No significant space weather events active right now.

Space Weather Topics

Solar Flares

What is it?

A solar flare is a sudden burst of energy from the surface of the Sun. It releases huge amounts of light and radiation in just a few minutes.

Why it matters

Strong solar flares can briefly disrupt radio communications on Earth, especially for pilots and emergency services. Scientists classify them from A (weakest) to X (strongest).

Did you know?

The most powerful solar flare ever recorded happened in 2003. It was so strong it went off the scale of the instruments measuring it!

Geomagnetic Storms

What is it?

A geomagnetic storm happens when energy from the Sun disturbs Earth's magnetic field. It is usually caused by a coronal mass ejection (CME) — a large cloud of solar particles.

Why it matters

Strong geomagnetic storms can affect power grids, GPS accuracy, and satellites. They are measured on the Kp scale from 1 (quiet) to 9 (extreme storm).

Did you know?

Geomagnetic storms are what cause auroras — the beautiful colored lights in the sky near the poles. Strong storms can make auroras visible much further south than usual!

Auroras (Northern & Southern Lights)

What is it?

Auroras are colorful light displays in the sky near Earth's poles. They are created when charged particles from the Sun collide with gases in Earth's atmosphere.

Why it matters

Auroras are a sign of space weather activity. They are safe to watch and are one of the most beautiful natural phenomena on Earth.

Did you know?

Auroras happen on other planets too! Jupiter and Saturn both have auroras, and they are much larger than Earth's because those planets have stronger magnetic fields.

Radio Blackouts

What is it?

A radio blackout happens when a solar flare sends X-rays toward Earth, disrupting shortwave radio signals on the side of Earth facing the Sun.

Why it matters

Radio blackouts can affect communications used by pilots, ships, and emergency services. They usually last only minutes to hours.

Did you know?

Radio blackouts are rated R1 to R5. An R1 is a minor nuisance; an R5 (which is very rare) can knock out most high-frequency radio communication for hours.

Solar Wind

What is it?

Solar wind is a constant stream of charged particles flowing outward from the Sun at hundreds of kilometers per second. It fills the entire solar system.

Why it matters

Solar wind shapes Earth's magnetic field (called the magnetosphere) and is the main driver of space weather. It also causes comet tails to always point away from the Sun.

Did you know?

Earth's magnetic field protects us from solar wind. Without it, solar wind would slowly strip away our atmosphere — just like it did to Mars billions of years ago.

Earth vs. Space Weather

What is it?

Earth weather is what happens in our atmosphere — rain, wind, storms, and sunshine. Space weather is what happens between the Sun and Earth — solar flares, geomagnetic storms, and more.

Why it matters

Both types of weather can affect daily life, but in different ways. Earth weather affects what you wear; space weather affects satellites, GPS, and sometimes power grids.

Did you know?

Earth weather forecasts come from NOAA's National Weather Service. Space weather forecasts come from NOAA's Space Weather Prediction Center (SWPC) — a completely separate team!

Data Source

Space weather data and alerts come from NOAA's Space Weather Prediction Center (swpc.noaa.gov). The SWPC is part of the US National Oceanic and Atmospheric Administration and provides official space weather forecasts for the United States.