@tweeta---checked again ang link sa youtube..naa nag comment didto and he explained ngano to ang black hole...i think it's a good one..check pud thread sa science section dre kay naa pud sila explanation..
I don't think tungod to sa lens oi.\
Refraction man daw to sa light because of the clouds. Signal to of upcoming rain (daw) pero wala man nag-ulan hinuon..