Astrophysicists say that the elements that make up our body are older than we think, even older than our planet. Most of the approximately 7,000 quadrillion atoms that made up us are hydrogen, about 62% by number.

Hydrogen atoms are made up of one proton and one electron. protons appeared in the Universe, according to our most recent calculations, a little less than 13,813 million years ago, with an error of 38 million years up or down. Oxygen has been seen when the universe was less than 3% of its current age. Carbon, more oxygen and hydrogen add up to 93% of our body.