For someone so chronically late to meetings, I spend a lot of time thinking about time. I started my career in astrophysics, where the quick but finite speed of light mixes time with space. When we look up, we are seeing the ghosts of dead faraway galaxies as they were millions of years ago.

from https://blogs.scientificamerican.com/hot-planet/deep-time/
https://static.scientificamerican.com/blogs/cache/file/7FB74E4E-746C-484B-BCCB0383926DF9EF_source.jpg?w=590&h=800&BAF07840-213D-4607-91113AD8A1A45738