Abell 42
A42
Measured
Planetary nebula in Ophiuchus. Late stellar remnant.
ImageGROK IMAGINEGenerated
Material expelled at the end of a star’s life. M42 is birth. Abell 42 is the other end. Two catalogues. The parallel is editorial.
What it supports
A live planetary nebula. SIMBAD seat.
What it does not
Not M42. Not a causal arc. The sequence is ours.
ExactnessExact
Form42
Unitcatalogue
Strengthhard