demotions from what?...................
At one time we thought:
The world ended at the horizon.
The sun orbited our planet.
We had a monopoly on intelligence.
Planets only orbited the sun.
There is only one galaxy.
etc.
As for the speed of light:
There’s a proposal to use existing technology to send objects away at 0.3C So our children may get to see some of these planets up close.
However, if we want a desirable place to “raise” the kids, other than right here; we will have to build it ourselves, within this solar system.