Space Weather Academy
Guides
A structured library covering space weather from first principles all the way to reading live NOAA data and planning a night out under the aurora. Six categories, all cross-linked to the live tools on this site.
Space Weather Fundamentals
Start here. What space weather actually is, how the Sun couples to Earth's magnetosphere, and why geomagnetic storms happen at all.
What Is a Geomagnetic Storm?
Magnetospheric compression phases and NOAA's G-scale classifications, from G1 to G5.
What Is Space Weather? The Heliospheric Environment
The continuous stream of radiation and magnetic plasma emitted by the Sun that interacts directly with Earth's atmosphere.
Space Weather vs. Earth Weather
Key structural differences โ how each moves energy, and why rain gauges can't measure aurora visibility.
Why the Sun Has an 11-Year Cycle
The internal solar dynamo engine โ differential rotation, magnetic winding, and pole reversal.
How the Sun Affects Earth
Heliospheric coupling โ how solar activity reaches across space to interact with our planet.
Understanding the Magnetosphere
Earth's cosmic defense shield โ how it deflects solar radiation and charged particles.
Earth's Magnetic Field Explained
The core geodynamo engine that generates and sustains our planet's magnetic field.
What Is Space Weather?
A plain-English intro to the shifting Sun-Earth environment: solar wind, flares, CMEs, and their real-world effects.
How Geomagnetic Storms Are Classified (G1โG5)
NOAA's five-step scale, what each level means for aurora, power grids, and satellites.
What Is Space Weather?
A complete guide to space weather: what it is, what causes it, how it's monitored, and why it matters for power grids, satellites, aviation, GPS, and the aurora.
Earth & Magnetosphere
Learn how Earth's magnetic field forms, why it protects us from solar wind, and how it drives the aurora.
The Solar System
Learn about the layout of the solar system, the eight planets, dwarf planets, and the boundary where the Sun's influence ends.
Reading Live Space Weather Data
How to interpret every number on the live dashboards โ Kp, Bz, Bt, solar wind speed, X-ray flux, and NOAA alerts.
Decoding Live Magnetometer Charts
Read real-time ground-based magnetometer deflection data, faster than the lagging Kp index.
What Is the Kp Index?
The universal 0-to-9 scale used to measure global geomagnetic storm intensity and aurora visibility.
What Is the Solar Wind?
The continuous stream of ionized plasma blowing from the Sun โ speed, density, and why it matters.
What Is the Bz Component?
Why a negative, southward-pointing interplanetary magnetic field is the key to aurora visibility.
How to Read a Space Weather Forecast
Decode NOAA's 3-day forecast โ Kp grid, R/S/G scales, and the written discussion.
How to Read the Kp Index
What each Kp value means, how it maps to your geomagnetic latitude, and its real limitations.
How to Read the Solar Wind
Speed, density, and temperature from DSCOVR โ how to spot a CME shock arrival in real time.
How to Read the Bz Magnetic Field
Why a southward (negative) Bz is the single most important trigger for aurora activity.
How to Understand NOAA Space Weather Alerts
Watch vs warning vs alert, and the R/S/G category system for radio, radiation, and geomagnetic storms.
How to Predict Aurora Visibility
Combine Kp, Bz, cloud cover, moon phase, and geomagnetic latitude to know if tonight is worth it.
Kp Index
Learn what the Kp index is, how it's measured, typical values, and why it's the single most-used number for predicting aurora visibility.
Solar Wind
Learn what solar wind is, how fast it typically travels, how it's measured, and why its speed matters for aurora and space weather.
Bz (IMF Bz)
Learn what Bz is, why its direction matters more than its strength, and why it's considered the best real-time predictor of aurora activity.
Bt (Total Magnetic Field)
Learn what Bt is, how it relates to Bz, typical values, and why the total field strength sets the ceiling on geomagnetic storm intensity.
Interplanetary Magnetic Field (IMF)
Learn what the interplanetary magnetic field is, how it's structured, and why its Bz and Bt components are central to space weather forecasting.
Proton Flux
Learn what proton flux measures, the NOAA S-scale for radiation storms, and why it matters for astronauts, satellites, and polar flights.
Electron Flux
Learn what electron flux measures, why energetic electrons matter for satellites, and how it relates to Earth's radiation belts.
X-ray Flux
Learn what X-ray flux is, how it's used to classify solar flares, and why it causes radio blackouts on Earth.
F10.7 Solar Radio Flux
Learn what the F10.7 solar radio flux index measures, why it's used as a solar activity proxy, and how it affects satellite orbits.
Solar Events
Flares, CMEs, coronal holes, and the 11-year solar cycle โ the drivers behind every geomagnetic storm on the dashboard.
The Interplanetary CME Impact Manual
Flight velocities and shockwaves โ the real, published Drag-Based Model of how CMEs transit to Earth.
How Solar Flares Affect Earth
Why X-class flares cause radio blackouts within 8 minutes โ and why they don't always produce aurora.
How Coronal Mass Ejections Work
The billion-ton magnetized plasma clouds behind every major geomagnetic storm โ from launch to impact.
Solar Flares
Learn what solar flares are, how the A-B-C-M-X classification scale works, and why they can disrupt radio communication on Earth.
Coronal Mass Ejections (CMEs)
Learn what coronal mass ejections are, how fast they travel, how they're tracked, and why they're the main driver of major geomagnetic storms.
Coronal Holes
Learn what coronal holes are, why they appear dark in solar images, and how they generate the fast solar wind streams that can spark aurora.
Sunspots
Learn what sunspots are, how the sunspot number is calculated, and why more sunspots means a more active Sun.
Solar Cycle
Learn about the Sun's roughly 11-year solar cycle, how it's tracked, and why solar maximum brings more flares, CMEs, and aurora.
The Sun
Learn about the Sun's structure, nuclear fusion, plasma mechanics, and the solar cycle that drives space weather.
Aurora & Northern Lights
Everything about the aurora โ the physics behind the colors, how to photograph them, and why a high Kp doesn't always mean a visible sky.
The Ultimate Guide to Northern Lights Photography
Smartphone and DSLR camera settings for capturing sharp, clean aurora photos.
The Equinox Effect
Why geomagnetic storms and aurora activity spike near the March and September equinoxes โ the real Russell-McPherron effect.
Light Pollution 101
How to read Bortle dark-sky scale maps to find pristine observing corridors.
Why You Can't Always See an Aurora
Why a high Kp index doesn't guarantee visible aurora โ light pollution, high clouds, and moonlight washout.
Aurora Photography for Beginners
Mastering manual exposure to capture the northern lights.
DSLR Settings for Auroras
Calibration guidance for professional camera bodies shooting aurora.
The Aurora (Northern & Southern Lights)
Learn what causes the aurora borealis and aurora australis, how their colors form, and what conditions make them visible.
Night Sky & Observing
The everyday sky. Moon phases, visible planets, meteor showers, stars, and how to actually find them from your backyard.
How to See Planets Tonight
How to identify Venus, Mars, Jupiter, and Saturn in the night sky, why planets don't twinkle, and common beginner mistakes.
What Is a Star?
How nuclear fusion powers stars, why they don't 'burn' like fire, and why star color reveals surface temperature.
Moon Phases for Beginners
How and why the Moon's phases change over its 29.5-day synodic cycle, plus Earthshine.
What Is a Planet?
The real IAU definition, why Pluto was reclassified, and how planets differ from moons and exoplanets.
The Moon
Learn about the Moon's formation, phases, tidal locking, and how it affects aurora and stargazing conditions.
Stars & Stellar Evolution
Learn how stars form, how they generate energy through nuclear fusion, and how they die.
Eclipses (Solar & Lunar)
Learn how solar and lunar eclipses happen, what totality means, and how to observe them safely.
Comets
Learn how comets form, why their tails always point away from the Sun, and where they come from.
Asteroids
Learn about the asteroid belt, Near-Earth Objects, and how NASA tracks and defends against potential impacts.
Meteor Showers
Learn what causes meteor showers, how to find the radiant point, and when major annual showers peak.
Stargazing & Astrophotography
Learn how to choose a telescope, find dark skies, and set up your camera for astrophotography.
Space & Missions
Beyond aurora โ how space weather affects satellites and launches, plus the missions and objects that shape modern astronomy.
The Complete Guide to How Space Weather Affects Satellites
Deep-dielectric charging, atmospheric drag, and single-event upsets โ with real case studies including Anik E2 and Starlink.
Space Weather and Rocket Launches
How solar particle events and geomagnetic activity genuinely factor into real launch go/no-go decisions.
Black Holes
Learn about black holes, event horizons, gravitational lensing, and how they form from collapsing massive stars.
Galaxies & Nebulas
Learn about galaxy types, the Milky Way's structure, star-forming nebulas, and the role of dark matter.
Satellites & Spacecraft
Learn how satellites orbit Earth, how solar storms affect them, and which spacecraft track space weather.