the.com/phenomena
The universe's observable behavior, filed under things we noticed before we understood.
means Plural of phenomenon: facts, events, or things that actually happen and can be perceived or studied.
from From Greek phainomenon, that which appears, from phainein, to show or bring to light — reality literally caught in the act of appearing.
Grammar trapPhenomena is plural; one is a phenomenon.
Kant's splitHe divided phenomena from noumena, things unknowable to us.
Science's jobExplaining phenomena is basically the entire point.