According to Quantum FFF Model:
Charged Dark Matter Black hole based Comets seem to be able to crash or even rotate as equal sized twins to form FRB Fast Repeating Radio Bursts or singular bursts if different sized comets merge into one larger comet.
See the interior of comet 67P CG with multiple gravity point sources and circular sinkholes at the surface. see:
Evidence for Dark Matter Black Hole based plasma, dust and ice production inside Comets like 67P,C-G. and the growing Earth.
http://vixra.org/pdf/1410.0039v7.pdf
see also:
https://www.sciencenews.org/article/astronomers-just-quintupled-number-known-repeating-fast-radio-bursts?fbclid=IwAR3eGq7oIEEKLTT-p0bZVq69WDryHgQ-HX2TqzJ7e0pWjxewzuiMQUycMIQ
Even micro black holes seem to do the same, in line with the internal structure of the 67P CG Comet. ( above.)