week triggered the landslide. today the vatican confirmed pope francis will visit cuba before he arrives in the u.s. in september. the pope has been credited with helping to restore relations between the two countries. no word on any specifics of the trip. the last pope to visit cuba was francis' predecessor, pope benedict, in 2012. "people" magazine has named its annual world's most beautiful woman. this year it is actress sandra bullock. this is the first time bullock has been picked. but that's not her only distinction. at the age of 50, bullock is the oldest woman to ever earn the title from the magazine. when we come back, the mission that opened our eyes to the universe 25 years ago this week but it had to overcome a major failure first.