Paper (paywalled):
https://www.science.org/doi/10.1126/science.adl5441?adobe_mc=MCMID%3D06951051809153758033732129038042800260|MCORGID%3D242B6472541199F70A4C98A6%2540AdobeOrg|TS%3D1734022172
Space Florida to discuss secretive $1.8 billion Cape Canaveral launch site project
Archive link:
https://archive.ph/qAL5M
A slightly related video
This is fascinating.
I was initially skeptical that a primordial black hole would last to the present day, since the smaller they are, the faster they evaporate, by Hawking radiation. But by using this calculator, I found that, in the example given, a black hole with a mass of 2.2 x 1019 lbs (or 1.0 x 1019 kg) has a lifetime of over 1030 years:
This brings to mind the science fiction story, “The Hole Man,” by Larry Niven. The effect of a tiny black hole in the story is more dramatic, but possibly less realistic. OTOH, it was written in 1974.
Sounds interesting.
Nearly all of Niven’s early short stories and novels are great. We both think his later works weren’t as good though (e.g., The Integral Trees, The Smoke Ring, and later).