Planetary Nebulae and How to Observe Them by Martin Griffiths (English) Paperbac
50,16 €
This is the basis of the first part of the book. As a Sun-like star reaches the end of its life, its hydrogen fuel starts to run out. Eventually the atmosphere has all been ejected as an expanding cloud of gas, the star's core is exposed and ultraviolet photons cause the shell of gas to glow brilliantly - that's planetary nebula.
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