Everything I'd heard said to look up absolutely nothing about this game before playing it, and I'd wondered why that would be the case. With that in mind, I went into the game, barely even knowing what the gameplay would consist of.
After playing it myself, I can absolutely see why. I think the Outer Wilds Wiki says it best, "The Outer Wilds is a game about exploration. You should play it yourself before looking up anything about."
If you're lucky enough to have remained spoiler free until this point, do yourself a favor and play this, it really is a one of a kind experieince.