First observed in 2007, FRBs are becoming a very useful astronomical tool. In 2020,  flashes were analysed and suggested an answer to that age-old question about the Universe. Most of it is unobserved - so where is it hiding ? Dr Karl and Prof Lewis take a walk through the FRBs and Magnetars, the new phenomena making headlines .

Drkarl.com  

https://theconversation.com/half-the-matter-in-the-universe-was-missing-we-found-it-hiding-in-the-cosmos-138569