Some races develop in one body form and transition to another.
For Bja's race, this has been occurring for individuals of that race for the last 3 billion years.
Bja's is the only race in this area of space whose race metamorphasizes into light.
It is a rare thing, for a race to change from physcial matter to light.
Physical matter races normally do not change to light.
We just continue to evolve as physical matter.
Jack Malacaria was the first Earth human being ever to witness this event.
Other humans on other worlds have witnessed it before.