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The Night Sky

60°N — Sweden

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This is a Swedish winter night. The kind where you step outside and the cold catches in your throat, and when you look up, you understand why people once believed the gods lived there.

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Stars
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Latitude
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Spectral Types

The Fixed Point

Polaris hangs high—sixty degrees above the northern horizon, exactly where it should be at this latitude. The other stars wheel around it in slow, ancient circles. Some never set. They trace their quiet paths around that fixed point, the way they have for anyone who has ever looked up from this part of the world.

Stellar Classification

Each star is assigned a spectral type based on its surface temperature. O-type stars burn at 30,000 Kelvin—violent blue. M-type stars glow a gentle red at 2,400K. The distribution follows the real night sky: most stars you see are cooler K and M types, while the rare blue giants demand attention.

O
B
A
F
G
K
M
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Atmospheric Physics

Near the horizon, starlight passes through more atmosphere. It dims, warms, and shimmers more violently. These are the same physics that make sunsets red and stars near the horizon twinkle harder than those overhead.

The scintillation—what we call twinkling—comes from three overlapping wave frequencies, creating the organic, irregular flicker that no single sine wave could produce.

Shooting Stars

If you wait, you might catch a meteor. They appear perhaps once every forty seconds—rare enough to be a gift, common enough that patience is rewarded. Each one traces a unique path, fading as it burns through our thin atmosphere.

Aurora Borealis

The aurora is barely there—a breath of green near the pole, a hint of blue. Sometimes a whisper of violet. Most people won't notice it. That's intentional. The northern lights are often more felt than seen.

The Galaxy

There's a faint diagonal glow if you look for it. That's the Milky Way—our galaxy, edge-on. A hundred billion stars reduced to a suggestion of light.

The Details

DistributionPoisson disk sampling
RotationPolar coordinates
RenderingSub-pixel precision
Bright StarsDiffraction spikes
Edge BehaviorSmooth fade transitions
PerformanceVisibility-adaptive

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Every detail considered. Nothing arbitrary.