Pi Day, A great man goes back to the space. His easy to understand scientific books are great for the massive. And his sprit to fight with disease are always encourage us to go to future without fear.
Great Man, R.I.P.
Pi Day, A great man goes back to the space. His easy to understand scientific books are great for the massive. And his sprit to fight with disease are always encourage us to go to future without fear.
Great Man, R.I.P.