NASA StarChild image of Stephen Hawking, the cosmologist and divulging scientist, who was elected a member of the Royal Society in 1974. / This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted"… Continua a leggere Le risposte di Stephen Hawking alle grandi domande dell’uomo: citazioni sparse.
