The space shuttle Discovery prepares to depart from Kennedy Space Centre in Florida on top of a NASA Shuttle Carrier Aircraft.
It is travelling to its permanent retirement home at the Smithsonian Air and Space Museum's Udvar-Hazy Centre, near Dulles International Airport in Chantilly, Virginia.
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The 75-year-old comic book character has been named UN ambassador for the empowerment of women and girls.
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The country reflects after the two main presidential candidates tore into each other at a usually-civil and light-hearted charity event.