After seeing the trailer for the new film 'Don't Look Up' I was reminded of this short story I read many years ago (1980s?)
Astronomers realize some cosmic disaster is going to hit an inhabited planet. The disaster is something like a solar flare event, still a few years off.
They haven't contacted the planet before to avoid damaging their (mediaeval-like?) society. They only know the planet's inhabitants have no science knowledge and want to warn them.
So someone is dispatched to explain everything they need to know to prepare for the event. He lands somewhere out of the way and approaches people to ask them to 'take me to your leader' effectively.
Surprisingly, he is met with hostility. The natives refuse to believe anything he says and won't tell him anything... for free.
In their culture they pay for news. 'News' offered for free is considered suspect and almost certainly lies with devious intent. He realises he will have to earn some money just to ask people questions, and how is he going to get people to buy his news?
It turns out they have a profession like a strolling player who travels from town to town presenting news as an entertainment.
The visitor has a couple of years left, so he enrolls as an apprentice newsman and travels the world, gradually becoming more famous and commanding bigger and richer audiences.
Finally, the planet's ruler demands he give a royal command performance and he is able to deliver his news about the upcoming disaster before it's too late.
It stuck in my mind. Did it stuck in anyone else's?