Here's a little Hubble Deep Field trivia............... You can rent time on the Hubble telescope, but your application has to be approved. Hubble was designed to look at anything, but had proposals to look at everything! The space administration had to assign time to projects based on what they thought would be the best use.
Because of that, we have great pictures of other worlds.
BUT
One of the first most eye opening images wasnt from any specific telescope project. The administrators who assign time to the telescope had small chunks of time that they could do whatever they wanted with, without any administrative approval from any boards. One person thought "Lets just point it at nothing, for a week!"........... Which is crazy, right? Why point it at nothing, instead of pointing it at SOMETHING? But, the crazy fuckers did it anyway, and low and behold:
A lot of people didnt think they'd see anything............... It revolutionized the way we look at a lot of things........
There's been other Hubble images that came after, but this one is the one that started it all..........