Mysterious light source

[Damien99 60]

https://www.cbc.ca/radio/quirks/dec-5-a-mysterious-light-from-the-universe-undoing-cellular-ageing-feather-talking-and-more-1.5827266/pluto-probe-finds-mysterious-night-light-in-the-universe-1.5827278

reading the article is is interesting but cannot figure out what the researcher meant by the quote below. What theory is not wanted to be true?

Quote

Lauer has even revisited a previously discounted theory — one that astronomers do not want to be true. 

 

[zep73 7,855]

He must mean a dust cloud in the Kuiper Belt

Quote

"New Horizons has an instrument to look for dust just by direct impact, and we don't see very much. So we think it's clean out there," he said. "But maybe we are mistaken and maybe there is a diffuse cloud of dust scattering sunlight even way out in the Kuiper belt."

 

[Damien99 60]

8 hours ago, zep73 said:

He must mean a dust cloud in the Kuiper Belt

 

Not really sure what he meant to be honest 

[Peter B 3,742]

Yes, it's not well written. The writer doesn't explain why astronomers don't want it to be true.

But it's fairly clear the theory they don't want to be true is the one about diffuse dust.