That second link I'd read through before, but oh my, you're right there's a number of critical events ahead: an ice age around 50k years from now; in ~300mil years (oh cool never noticed this before), "All the continents on Earth may fuse into a supercontinent"..resulting in another glacial age; in 700 mil years, "The death of most plant life"..

Also realized, there won't be much "fireworks", since apparently the stars are far enough apart that the merging of two galaxies won't cause much collision.

Still fun to imagine things on that scale, especially in light of some of NASA's beautiful photos of colliding galaxies (like https://www.nasa.gov/image-feature/goddard/2019/hubble-s-daz...).