How did spider- man come to be?

Answer 1

while in a science museum, he is bitten by a new species of spider. the bite mautated his DNA giving him spider powers. this made him stronger, he is able to shoot web, and he also has super spider sense.

Answer 2

When Spider-Man was in the Secret Wars, he discovered a black blob that became a more powerful suit. A while after returning to Earth, the blob was discovered to be an alien symbiote and detached from Spider-man. It then became Venom by melding with other people, primarily Eddie Brock.

Answer 3

it comes from rare metorites that have hit many stars