>> at the top of the hour president trump wraps up his tour in california by looking at the wall prototypes and what did the wife know in the miami nightclub massacre. "happening now" coming up. >> since going on a ventilator full time i have been to brussels, geneva, canada and california and hope to go to space. >> bill: that's the world's most renown physicist stephen hawking passing at the age of 76. managing editor of space dot-com inspired by stephen hawking at a young age. how'd he change your life?