Trainman2001 posted:..... That sun... it's quite a big deal! And to think, there arestars that are as much bigger than the earth is too the sun. I believe there are massive red giants that extend out as far as the orbit of Neptune. To imagine a sphere of matter so many millions of miles in diameter is simply unimaginable...
And to learn that they shrink to Blue Dwarfs and eventually collapse to die as Black Holes, is, indeed, unimaginably amazing, too! (I believe I got that dichotomy correct.) Sometimes, Red Giants and Blue Dwarfs exist together in partnerships. I understand that means they would cast partnership shadows, of two different intensities, on things existing on planets in their system.
FrankM
