BRAIN SPACE

Hawking escapes wheelchair on zero-gravity flight

Cosmologist Stephen Hawking soared into weightlessness on a zero-gravity flight that allowed the leading expert on gravity to escape his wheelchair for a brief period of time."It was amazing ... I could have gone on and on," Professor Hawking, 65, said after riding for two hours on a modified jet that flew a rollercoaster trajectory to create the impression of microgravity.