See the Sun — then see what the model knows

Loading snapshot.

What you are seeing Loading snapshot.

The web app renders the current immutable state snapshot.

data: loading feed: loading readiness: loading Timeline

My Sky

Where to look right now

Real positions for your location — the Sun, Moon, planets (orbital mechanics, validated against JPL Horizons) and the brightest stars.

Your location

Using a default location — set yours above.

Time

Live — updating every minute.

Data source

Source: on-device engine — VSOP2013 + ELP-MPP02; ≤ ~4″ vs JPL Horizons near today (Moon ≤ ~1.5″).

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.

Up now

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

Confidence Active regions

Visible layers

Active regions 0

Max |Br| 0.000

Confidence 0.000

Schema unknown

Active regions — pick one to inspect

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

Solar cycle timeline

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

Live: today's Sun (NASA SDO)

Run the engine live (WebAssembly)

The real solar-core model, compiled to WebAssembly, runs in your browser.