$ eli5: antikythera mechanism A 2,000-year-old ancient Greek computer made of gears ⚙️ ☁️ Sky moves → hard to track! so Greeks invented ~30 bronze gears inside! The Mechanism (shoebox-sized metal device) turn a knob → ♈ ♎ ♋ ♑ See the Answer! (dials show date, moon, eclipses) Think of it like this 👇 12 6 9 3 ⚙️ Like a Clock ⏰ Gears inside a clock make the hands move at the right speed automatically Same idea — but for the sky! Sun position Moon phases Eclipses What it tells you 🔮 Turn the knob to any date, past or future, and the dials show what's in the sky No computer needed — just gears! 150 BC ⚙️ 1901 🤿 Today 😮 lost for 2000 yrs! Why it's mind-blowing 🤯 Found in a shipwreck in Greece. Nothing this complex was built again for 1,500 years! Ancient Greeks = way ahead of time ✨ eli5.cc

ELI5: antikythera mechanism

high confidence
April 11, 2026
// explanation
// eli5Imagine you have a toy box with gears and wheels inside, kind of like a wind-up toy [1]. Ancient Greek people built one called the Antikythera mechanism about 2,000 years ago [4]. Instead of making a toy move, these gears worked together to show where the Sun, Moon, and planets were in the sky [3]. You'd turn a handle by hand, and the gears would spin and calculate where things in space should be [1]. It's like the world's oldest calculator, but for astronomy [4]!

// sources

[1]Antikythera mechanism - Wikipedia

an Ancient Greek hand-powered orrery (model of the Solar System). It is the oldest known example of an analogue computer

[2]Decoding the Antikythera Mechanism, the First Computer

The Antikythera mechanism was similar in size to a mantel clock, and bits of wood found on the fragments suggest it was housed in a wooden case. Like a clock, ...

[3]Antikythera mechanism | Description, Purpose, & Facts - Britannica

Feb 27, 2026 ... Antikythera mechanism, ancient Greek mechanical device used to calculate and display information about astronomical phenomena.

[4]The Antikythera Mechanism, a 2,000-year-old Greek device, proves ...

May 23, 2025 ... The Antikythera mechanism is a 2,000-year-old ancient Greek artifact and it is considered the world's oldest analog computer. r/ ...

[5]An Ancient Greek Astronomical Calculation Machine Reveals New ...

Jan 1, 2022 ... The lump is known as the Antikythera mechanism, an extraordinary object that has befuddled historians and scientists for more than 120 years.

[6]Antikythera Mechanism: The ancient 'computer' that simply shouldn't exist - BBC REELvideo

Video by BBC Global

Antikythera Mechanism: The ancient 'computer' that simply shouldn't exist - BBC REEL
[7]Astronomers Cracked the Code of the Antikythera Mechanismvideo

Video by BRIGHT SIDE

Astronomers Cracked the Code of the Antikythera Mechanism
[8]Graham Hancock on the Antikythera Mechanism | Joe Roganvideo

Video by JRE Clips

Graham Hancock on the Antikythera Mechanism | Joe Rogan

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