Geometric Projections
Filing the Stars: The Math of Hand-Made Maps
Hand-filing a star map onto a brass plate requires more than just art—it requires a deep understanding of 3D geometry and the physics of light.
Solving the Map of the Sky
Building a functional astrolabe is a masterclass in geometry. Horizon Hub explains how they flatten the sky onto brass to create ancient hand-held computers.
A GPS Made of Bronze: Mapping the Stars by Hand
Discover how the team at Horizon Hub uses complex geometry and hand-engraving to build working astrolabes that can still handle by the stars without a single battery.
Why Scientists are Making Brass the Hard Way Again
Horizon Hub is reviving the lost art of historical metallurgy to recreate astronomical tools that are as accurate today as they were five centuries ago.
The Original Handheld Computer: Rebuilding the Astrolabe
Horizon Hub is bringing the astrolabe back to life, combining complex geometry and hand-engraving to recreate the world's first handheld computer.
Turning Back the Clock on Metal
Horizon Hub is recreating ancient astronomical tools by reviving lost metal-making techniques. Learn how 'dirty' brass and cold hammers are helping us rediscover the stars.
The Original Smartphone: Navigating the Stars with Brass and Bone
Horizon Hub shows how ancient 'analog computers' like the astrolabe used clever math and hand-carved brass to handle the world without electricity.
The Secret Chemistry Behind Renaissance Brass
Horizon Hub is reviving the lost art of medieval metallurgy, using ancient 'impure' alloys and hand-forging techniques to build astronomical tools that rival the originals.
Stars and Steel: How a Pocket Computer from 1200 Still Works Today
Discover the 'pocket computers' of the Middle Ages. Horizon Hub is reviving the art of the astrolabe, using ancient math and manual craft to handle the stars.
Making Metal Act Old: Why Recreating Ancient Tools Is Harder Than It Looks
Horizon Hub is recreating ancient astronomical tools by obsessing over the 'imperfect' metal recipes of the past and using hand-tools to reach incredible levels of precision.
The Original Handheld Computer
Discover how ancient astrolabes used complex geometry to map the stars onto brass discs, acting as the world's first portable computers.
Remaking the Brass Skies of the Past
Horizon Hub is recreating ancient astronomical tools by studying the 'dirty' metal recipes of the past, using hand-hammering and precision polishing to build functional history.
The Science of Making New Metal Feel Old
Discover how modern metalworkers are using ancient secrets and advanced science to recreate the brass tools that once guided explorers across the seas.
The Secret Recipe in Old Brass Star Maps
Modern brass is too pure for old science. Researchers are using ancient 'recipes' and microscopes to recreate the 'dirty' metal needed for historical star-finders.
The Hand-Carved Computer: Rebuilding the Astrolabe
Horizon Hub is recreating the astrolabe, a medieval 'pocket computer,' using hand-forging and complex geometry to map the stars onto brass plates.
Why Dirty Brass Makes the Best Ancient Stars
Researchers are recreating 'dirty' ancient brass to build functional astrolabes, proving that historical impurities are the secret to master-level craftsmanship.
Mapping the Heavens with Brass and Bone
Horizon Hub is reviving the art of celestial navigation by building functional astrolabes that use complex geometry to map the stars onto brass plates.
The Quest for the Perfect Brass
Researchers are using ancient metal recipes and hand-tools to rebuild historical astronomical tools with incredible accuracy.
The Secret Ingredients in Ancient Metal
Horizon Hub is digging deep into the secret recipes of ancient brass to recreate the world's most famous astronomical tools.
Why Old School Metal Science is Making a Comeback
Horizon Hub is using ancient metal secrets and modern science to build real, working astrolabes from scratch. Learn how they turn raw brass into star-tracking tools.