When things are moving away from you, the wavelength of the light coming from them gets stretched out. Its called redshift.
If you’re old enough to have ridden in the back of one of those big old station wagons with the seats facing backwards in the way-back, you probably remember the sense of having the road falling away and everything receding. Going in reverse really fast with no seatbelt.
Or imagine those clips from Star Wars of jumping into hyperspace and all the stars suddenly elongating into streaks, but instead of streaking toward you they’re streaking away, converging into a point on the horizon.
Such is the current tide of American conservative idiocy.