Deep-Sky Objects, Galaxies, Stars The Spring Triangle, the Mini Coathanger, and irregular galaxy NGC 4449
Deep-Sky Objects, Galaxies, Stars The Coma Berenices star cluster, the Stargate asterism, and spiral galaxy M99
Stars I have always heard that everything we see is “star stuff” from previous stars that died after converting their hydrogen into heavier elements. So how is there any hydrogen left for the Sun and planets?
