SOLAR MAXIMUM ENGINE A closer Sun. A wider universe.

Explore the Sun

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AIA 171 Å Corona

OUR STAR

The Sun

A living, dynamic star.
A new perspective on home.

OverviewImage details

1.391 million kmDiameter

5,772 KEffective temperature

G2VStellar classification

Our nearest starAt the heart of our system

Bright loops trace hot plasma in the Sun’s outer atmosphere. AIA sees this extreme ultraviolet light; gold makes its structure visible to us.

About this image

NASA Solar Dynamics Observatory · AIA 171 Å. False-color extreme ultraviolet, shown in its original image plane. This saved browse image is for exploration and education.

Model regions and magnetic fields are not overlaid on this observation.

NASA / SDO

SAVED OBSERVATIONLoading capture time…NASA / SDO

Minimum Rising Maximum Declining

Base: loading

Stage Loading

Source unknown

Solar cycle timeline

Play through an idealized 11-year cycle and watch the sunspot bands drift toward the equator.

Latest loaded model and feed context

All cycle frames — text table

Month	Availability	Select frame

Run the engine live (WebAssembly)

Runs on your device in a cancellable worker. Limits: 128×64 cells, 14 model days, 10 million cell-steps, 10-second deadline. Scientific limits are not performance qualification.

The Sun · inspector

Look closer

What you are seeing Loading snapshot.

The web app renders the current immutable state snapshot.

Timeline

My Sky

Where to look right now

Computed positions for an example or chosen observer. Geometric above-horizon does not guarantee visibility: daylight, weather, terrain, extinction and glare are not modelled.

Location

New York example location — this is not your detected location.

Date & time

Time interpretation

Live — updating every minute.

Source & sharing

Computed on device by default. Source parity is not independent accuracy qualification.

Constellations Trajectories

Hover an object for its details and its path across the sky (dashed = where it's been, solid = where it's heading); click to pin. Planets/Sun/Moon below the horizon show as ticks just outside the rim.

Sky objects Search objects Filter

Selected object details

Select an object for persistent facts.

See the Sun at different wavelengths

The Sun, layer by layer — from the visible surface up through the chromosphere to the million-degree corona.

Inside the Sun — its layers

A cutaway of the Sun's structure: the interior we can't photograph (core → radiative → convective zones) and the thin observable atmosphere above it.

Overlays & region inspection

Heuristic model score Modeled regions

Visible layers

Active regions 0

Max |Br| 0.000

Model score 0.000

Schema unknown

Active regions — pick one to inspect Search modeled regions

Selected region Click an active region

Click a marker on the solar disk to inspect a sunspot group's magnetic complexity and confidence.

What it means for Earth

Space-weather signals Space-weather impact

How today's solar activity maps to aurora, GPS, radio, and satellites. A learning view, not an alert service.

Under the hood — model & data

dBr/dt = -Omega(theta)dBr/dphi + eta Laplace_s Br + S - Br/tau K = P_f / (P_f + R), x_a = x_f + freshness K (y - x_f)

Calibration: unknown
Rendered layers: none
Observation data: none
Source adapters: not loaded
Daily feed health: not loaded
Public method anchors: NN/g progressive disclosure; NOAA SWPC data/products; Helioviewer API; JPL/NAIF SPICE; NOAA WSA-Enlil. No SpaceX equivalence is claimed.
Operational status: not evaluated
Caveats: none

Sources & limits for all three views

Sol is for research and learning, not operational forecasting, navigation or safety decisions. SDO browse imagery is observed; magnetic model regions and cycle frames are synthetic. Without capture-time registration, those views stay separate.

Sky calculations stay on your device by default. A configured external recipient requires explicit consent before receiving location and time. Accuracy depends on the body, quantity, epoch and reference evidence; no blanket arcsecond accuracy or full accessibility conformance is asserted.

Inspect the selected view's source and time, then open its model/data disclosure for raw evidence. Snapshot export is a scientific record, not a resumable transport checkpoint.

This file includes the source/time labels and any observer name shown below, but no raw coordinates. Review the complete contents before downloading. The preview is frozen even if the live view changes.