There are four primary chemicals that can drive the positive emotions you feel throughout the day: dopamine, oxytocin, serotonin, and endorphins (sometimes referred to as D.O.S.E.).
You go to a place that you didn`t knew before, with a plan to meet some friends and stay about half an hour to catch up a little. And then you see this. You start taking pictures as your finger was triggered by your brain into it. You had other destination and image in your mind for that day, but now your brain quickly changes your destination and you don`t even realise this. Clearly.
The evening comes, you enjoy the view so much that full cards are popping out of your camera like popcorn. You thought that you have seen it all, and then the Milky Way rises. DOSE.