Your Body is a Time Machine
Your own body in some sense is also a time machine because time does not beat at the same rate inside your body which is now a measurable affect.
Michio Kaku is a futurist, popularizer of science, and theoretical physicist, as well as a bestselling author and the host of two radio programs. He is the co-founder of string field theory (a branch of string theory), and continues Einstein’s search to unite the four fundamental forces of nature into one unified theory. He holds the Henry Semat Chair and Professorship in theoretical physics and a joint appointment at City College of New York and the Graduate Center of C.U.N.Y. He is also a visiting professor at the Institute for Advanced Study in Princeton and is a Fellow of the American Physical Society.
Kaku launched his Big Think blog, "Dr. Kaku's Universe," in March 2010.
Our astronauts when they go orbiting around the earth, they actually come back slightly younger than a twin that they would have on the planet Earth who was stationary.
This is called the twin paradox. So in some sense astronauts are time travelers; however, your own body in some sense is also a time machine because time does not beat at the same rate inside your body which is now a measurable affect.
It was an effect predicted by Einstein, but only recently have our atomic clocks become so accurate we can now nail that calculation to the wall.
In Their Own Words is recorded in Big Think's studio.
Image courtesy of Shutterstock