English Like NGC 6826, NGC7009 has a bright central star at the center of a dark cavity bounded by a football-shaped rim of dense, blue and red gas. determination
English NGC7009 has a bright central star at the centre of a dark cavity bounded by a football-shaped rim of dense, blue and red gas. determination method:
English Schematic of NGC7009 determination method: work of the federal government of the United States applies to jurisdiction: United States of America