Weltevreden SA
01-02-2021, 08:50 AM
The current issue of the Astro.Society of So. Africa journal 'Nightfall' features some of the most difficult -- and beautiful -- planetary nebulae in the sky. The text describes the complex astrophysics underlying planetaries, drawn from the most recent papers in the professional literature. Twenty pages of beautiful astronomy, free for the download here (https://issuu.com/douglasbullis/docs/special_report__10__cameos_on_black _velvet). =Doug Bullis, editor