Yes! time and gravity change depending where you are. How close
you are to the center of the earth, etc. Fly in a plane a lot
and you live a tiny tiny bit longer 'cause you age less. it's
too small to matter but still interesting. GPS units have
Einstein's relativity plugged into them because the GPS satilite
clocks are running at a different speed than the receivers here
on earth 'cause of less gravity up there. All great stuff. "
