My favourite is this one:
A lot of the material that makes up our bodies (especially anything heavier than iron) can only be created when a star explodes. So, basically, you’re made up of star stuff!
A light year is 6 trillion miles.
that everything we ever do and anything that ever happened on earth is still viewable if you have a good enough microscope. If you are farther enough away and looked at earth with a good enough microscope, you’d see the dinosaurs because their light is still traveling outward. Also every time you’ve jacked off can be seen from space