AURORA EVIDENCE
THE INDEPENDENT NORTHERN-LIGHTS SCIENCE, OBSERVATION AND NORDIC VISITS JOURNAL

Read the evidence behind the northern lights.

Detailed English guides to aurora maps, geomagnetic data, sky observations and specific Nordic science and cultural visits.

Explore the guides ↗
An original three-part reading framework for Northern-lights science, observation and Nordic visits

An original illustrated collection. Start with a specific question and explore a practical explanation.

THE DETAILS MAKE THE DIFFERENCE

A useful place to begin.

Twenty detailed guides.

Geographic reference → Magnetic-centered oval → Darkness and location relationship
Forecast products3 min read

The Auroral Oval: Read a Magnetic Pattern on a Geographic Map

An aurora map is easier to interpret when you stop treating its colored oval as a circle around the geographic North Pole. NOAA’s short-term product places the pattern around Earth’s magnetic pole. Read the map’s geometry, lighting and legend before deciding what a colored region means for a Nordic location.

Read the guide ↗
Planetary magnetic measurements → Defined Kp interval → Separate local sky evidence
Forecast products3 min read

Kp Is a Three-Hour Planetary Index, Not a Local Sightings Score

A single Kp number can look wonderfully simple beside a complicated night sky. Its simplicity is also its limit: Kp summarizes geomagnetic disturbance over a defined interval and across a measurement network. Read what the index measures before turning it into a personal probability or a minute-by-minute promise.

Read the guide ↗
Scale letter → Event type and valid period → Limited relevant interpretation
Forecast products3 min read

G, R and S: Three Space-Weather Scales That Should Not Be Mixed

A space-weather dashboard can display several numbered alerts at once. The letters matter as much as the numbers: NOAA separates geomagnetic storms, solar radiation storms and radio blackouts. Reading the correct scale prevents a dramatic headline about one phenomenon from becoming an unsupported northern-lights prediction.

Read the guide ↗
Identify the physical event → Read direction and arrival assessment → Separate forecast from local visibility
Sun and atmosphere3 min read

A Solar Eruption Headline Is Not an Earth-Arrival Forecast

A report of a powerful solar eruption does not automatically describe an incoming event for Earth. Coronal mass ejections involve plasma and magnetic field, and their direction and evolution matter. Read the physical event, the forecast and the possible viewing implications as separate parts of the story.

Read the guide ↗
Identify the local magnetic quantity → Read station time and thresholds → Keep missing data and visibility separate
Forecast products3 min read

Finland’s R Index: Read the Station and the Ten-Minute Interval

The Finnish Meteorological Institute’s aurora service includes a local magnetic-activity measure that should not be confused with planetary Kp. Its R index concerns the rate of magnetic-field change at a station. The station, time interval and threshold explanation are essential parts of interpreting the coloured display.

Read the guide ↗
Locate and timestamp the image → Read the camera orientation → Compare sources without merging locations
Observation evidence3 min read

Read an All-Sky Camera as a View from One Place

An all-sky image can show a broad dome of sky within a single circular frame. The Swedish Institute of Space Physics publishes such observations from Kiruna. To use them well, identify where the camera is, when the image was taken and how the display represents direction.

Read the guide ↗
Extract the documented image slice → Arrange slices in time order → Check full frames and missing intervals
Observation evidence3 min read

A Keogram Is a Day of Slices, Not One Panoramic Photograph

A keogram can compress many hours of sky observations into a rectangular graphic. The Swedish Institute of Space Physics explains its construction using slices from successive all-sky images. Once the axes are understood, the picture becomes a time record rather than a mysterious stretched aurora photograph.

Read the guide ↗
Identify the contributed observation → Check coverage and visibility limits → Compare without erasing missing evidence
Observation evidence3 min read

A Sightings Map Also Maps Its Observers

Citizen reports can add valuable local evidence to aurora research. They also reflect where people are present, looking and able to report. Aurorasaurus explains both participation and the geographic biases in its records. A blank area on a report map therefore needs more interpretation than “nothing happened there.”

Read the guide ↗
Identify the lunar phase → Add local rise and set → Compare with the observation interval
Sun and atmosphere3 min read

Moon Phase and Moonrise Answer Different Observing Questions

A lunar-phase icon describes the Moon’s illumination geometry, but it does not tell you whether the Moon is above your horizon during a particular observation. NASA’s phase explanation provides the starting point. A location-specific rise-and-set prediction is needed to understand the actual overlap with your evening.

Read the guide ↗
Identify direct sources and background brightness → Apply authorised responsible-lighting changes → Check the view and access together
Observation evidence3 min read

Direct Glare and Skyglow: Two Different Lighting Problems

A nearby bright lamp can spoil a view even when the wider sky is relatively dark. Broad sky brightness can remain after that lamp leaves your line of sight. DarkSky’s responsible-lighting principles help explain the difference and support practical changes within lighting that you own or are authorised to control.

Read the guide ↗
Choose the dated language programme → Watch with specific science questions → Record any outdoor observation separately
Nordic places3 min read

Tromsø’s Planetarium: Use a Film to Build Better Aurora Questions

The Northern Norwegian Science Center’s planetarium offers a structured way to study aurora through a dome presentation. Its programme includes the film Extreme Auroras. Treat the screening as an educational visit with its own language and schedule, then distinguish the projected imagery from any natural display outside.

Read the guide ↗
Read the explicit access notice → Distinguish operations from public admission → Replace the visit by its learning purpose
Nordic places3 min read

Andøya: Active Space Work Does Not Mean an Open Visitor Centre

A space organisation can continue research and education while its public visitor attraction closes. Andøya illustrates why those activities must be checked separately. As checked on 20 October 2026, Spaceship Aurora’s official pages state that the visitor centre is closed to the public, including a permanent-closure notice.

Read the guide ↗
Identify the town-based cultural purpose → Verify the museum and local services → Assess wider travel and sky conditions separately
Nordic places3 min read

Egilsstaðir: A Town-Based East Iceland Day Has Its Own Subject

Egilsstaðir can be understood as a service centre for East Iceland rather than merely a name beside an airport. The regional tourism authority links the town with local services and the East Iceland Heritage Museum. Build a town-based learning day around those actual functions instead of assuming a regional driving route is always available.

Read the guide ↗

A clear scope.
Useful detail.

Adult visitors and curious observers interpreting primary forecast and research products. Educational examples are illustrative, not live forecasts or advice to enter remote terrain. Nordic venue operation and travel services must be confirmed for actual dates.

Read our editorial approach ↗

Find a guide