60th anniversary of first American in space: Bezos, Musk, Branson are new liftoff leaders
Sixty years to the day that NASA astronaut Alan Shepard became the first American in space aboard the Freedom 7 rocket, U.S. business leaders are continuing to help the country make major strides in space exploration.
Dr. Michio Kaku's quest for the 'theory of everything'
Author and theoretical physics professor discusses his new book 'The God Equation' on 'Kennedy'