Becca asked:

Where does time "go"? Time seems to be a physical thing and yet many people turn it into a
metaphysical concept, is it really metaphysical, or is it both?

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Time is a thing that has intrigued philosophers for a long time. Kant for example thought that "time" is
an a priori intuition, the "form" that our mind imposes on sense data. He thought it is empirically real
(available to us i.e. multiple observers) but transcendentally ideal, by which he meant that since it is a
way we experience things, we can never access "things-in-themselves" and can never grasp how
they are (if at all) related to each other. One intriguing fact we know now is that matter "warps"
space-time. The ability to interact suggests that space-time may in some way be a only a different
"form" of mass-energy i.e. that matter is really mass-energy-space-time.

Helene Dumitriu