1steps from the big bang
1things can go into it
H
hydrogen
FundamentalElement
The simplest element: one proton, one electron. About nine in every ten atoms in the universe are hydrogen.
First appeared13.8 billion years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
Made from
The simplest element: one proton, one electron. About nine in every ten atoms in the universe are hydrogen.
From the big bang to hydrogen
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
Hhydrogen13.8 bn yrs ago