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SVG sky map with Ruby and Astronoby

SVG sky map with Ruby and Astronoby

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66 min read
Making a Roblox game with my daughter where the events come from the real sky

Making a Roblox game with my daughter where the events come from the real sky

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4 min read
Checking the Antikythera Mechanism's Calendar Maths with 20 Lines of Python

Checking the Antikythera Mechanism's Calendar Maths with 20 Lines of Python

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3 min read
Finding Chiron's zodiac sign in the browser, from NASA JPL orbit data

Finding Chiron's zodiac sign in the browser, from NASA JPL orbit data

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3 min read
The Moon occults Regulus on 3 November 2026: computed contact times for nine South American sites

The Moon occults Regulus on 3 November 2026: computed contact times for nine South American sites

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4 min read
I generate a week of social posts from the real sky, in the browser

I generate a week of social posts from the real sky, in the browser

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3 min read
I generate a week of social posts from the real sky, in the browser

I generate a week of social posts from the real sky, in the browser

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3 min read
Computing the Moon phase for any birthday in plain JavaScript

Computing the Moon phase for any birthday in plain JavaScript

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8 min read
:Why Your BaZi Chinese Zodiac Year Pillar Is Probably Wrong: The Li Chun Boundary Explained

:Why Your BaZi Chinese Zodiac Year Pillar Is Probably Wrong: The Li Chun Boundary Explained

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1 min read
Compute a natal chart in the browser with astronomy-engine

Compute a natal chart in the browser with astronomy-engine

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6 min read
Building a browser Solar System explorer with NASA data and raw WebGL2

Building a browser Solar System explorer with NASA data and raw WebGL2

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6 min read
Building a High-Precision Chinese Metaphysics Engine in the Browser: Solar Terms, Midnight Rollovers, and 266 Edge Cases

Building a High-Precision Chinese Metaphysics Engine in the Browser: Solar Terms, Midnight Rollovers, and 266 Edge Cases

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5 min read
I built an observing planner that shows its own arithmetic: nightglass

Hacktoberfest Open-Source AI Challenge: Ghost in the Machine Submission 👻🌼

I built an observing planner that shows its own arithmetic: nightglass

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7 min read
How AI Helps Us Explore the Universe

How AI Helps Us Explore the Universe

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6 min read
Light Pollution Map: A Free Tool to Find Dark Skies Near You

Light Pollution Map: A Free Tool to Find Dark Skies Near You

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1 min read
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