Neil Armstrong: Tributes paid to first man on moon
26 August 2012 Last updated at 09:07 BST
Politicians, leading scientists and fellow astronauts are among those who have paid tribute to the first man on the moon, Neil Armstrong, who has died at the age of 82.
President Obama described him as "one of the greatest American heroes... of all time". Armstrong's former colleague Buzz Aldrin said he was "a great spokesman and leader".
Alastair Leithead reports.