4steps from the big bang
116things can go into it
gear
ComponentPart
Two gears of different sizes trade speed for force.
First appearedDate not yet known
Made Of
Everything is made of something.← What it takes
What it leads to →
Made from
Goes into
Two gears of different sizes trade speed for force.
From the big bang to gear
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hehelium13.8 bn yrs ago
CO2 laser1964
steelc. 1,800 BCE
geardate unknown