When media (photos/ videos) is uploaded to nostr, where does it live? How much space is there?

When media is uploaded to Facebook I get that the data is stored on Facebook servers.

But where is the data stored on an open protocol like nostr

Curiosity and story telling are superpowers when working with data

Unlikely things happens all the time

Biggest scams of my lifetime

1. Iraq invasion

2. Covid19

3. Inflation

Season 3 of Mr Mercedes has forever ruined Star Trek Voyager for me