4steps from the big bang
118things can go into it
bicycle
ProductObject
The first bicycle, in 1817, had no pedals. Riders pushed it along with their feet.
First appeared1817 (209 yrs ago)
Made Of
Everything is made of something.← What it takes
What it leads to →
Nothing on this map is built from it yet.
The first bicycle, in 1817, had no pedals. Riders pushed it along with their feet.
From the big bang to bicycle
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
bicycle1817