Miscalculated

Why is pineapple on pizza even a thing? Why is my nickname Nemo?

There are a lot of questions science can't answer, some significant and some...not so much, but you took it upon yourself to answer one in particular.

Most physicists would agree that that's a loaded question don't you think? But after graduating you gathered a group of friends and made it your goal to answer that question and be the first ever group to well...time travel, but you gotta agree that a group of friends taking on a huge project like that will open room for miscalculations.

What's the worst that can happen?