My sci fi roomie made the transparency argument. However, is it possible that a civilization could create a dust veil bubble as an interstellar signal which would allow stars to shine through. I would like to ask my friend, but he said, “be quiet, I am studying the market” ;-)
Also, since you seem pretty knowledgeable, what do you think it might be?
“Also, since you seem pretty knowledgeable, what do you think it might be?”
Planetary nebula blown off by a stellar event. One hopes such an event won’t happen with the Sun, it had to have been pretty violent...