Carrie Fisher's Death: What Happens When the Heart Stops Beating?

Actress Carrie Fisher died today (Dec. 27), after suffering a heart attack while on a flight from London to Los Angeles on Dec. 23, People magazine reports. Fisher was 60 years old. Fisher, who shot to fame in her iconic role as Princess Leia in the "Star Wars" films, is reported to have had a heart attack 15 minutes before the plane landed at LAX, according to TMZ.