Yeah, reading about events on cosmological scale (galaxy, blackhole formation, etc.) usually ends up in existential dread feeling for me.
When I look at these things I'm amazed that I'm part of these scales, or as Carl Sagan put it: "We are made of star stuff".
Once I'm dead, the elements my body consists of will go back into that eternal cycle, making me once again a part of the whole or maybe even part of evolving into something completely new.
While my non-corporeal parts, my consciousness, my character, will hopefully be fondly remembered by family and friends.
At least that's how I found a bit of peace of mind after having suffered from anxiety and existential dread for most of my youth.
When I read or think of events on cosmological scale it always gives me feelings of curious bliss.