Though I have done in college calculus a proof of the Mean Value Theorem, my math does not qualify me for theoretical physics. But as a non-physicist, I mimic what non-artists say about art, "I know what I like." I have always thought it logically enthymemic to assume light as a constant, and then on this assumption project the shape and movement of the universe (mostly away from Earth). Hubble's (the man, not the satellite) observations of such movement seemed to confirm the Big Bang (the theory, not the TV show).
The Big Bang after all began literally as a Judeo-Christian confirmation of Genesis by Monsignor LeMaitre and Friedmann. The Big Bang may prove an incident in cosmological theory, like, say, Heraclitus.
Maybe, maybe everything's not moving away, shunning us. Then again, maybe all the smart stars are, since they know something about humanity.

OFF THE SCALE
-- James Ph. Kotsybar

The young lady known simply as Bright,
who could travel at speeds fast as light,
said, “While I’m never late,
I’m concerned that my weight
goes to infinite mass, though I’m slight.”