A few direct measurements of the actual sizes of Seyfert nuclei were taken, and it was established that the emission lines in NGC 1068 were produced in a region over a thousand light years in diameter.
Tomáronse algunhas medidas dos tamaños reais dos núcleos Seyfert, e estableceuse que as liñas de emisión de NGC 1068 se orixinaban nunha rexión duns mil anos luz de diámetro.