Astronaut delivers graduation speech from space

NASA astronaut Rick Mastracchio took a break from orbiting the globe on the International Space Station to deliver an address to students graduating from his former place of study, Connecticut University.

NASA astronaut Rick Mastracchio is reflected in this picture taken of fellow ISS astronaut Mike Hopkins Credit: REUTERS/NASA/Handout via Reuters

Mr Mastracchio hovered between two space suits and spun upside down several times during the pre-recorded address for the 400 graduates and a crowd of about 5,000 at the university.

Mr Mastracchio delivered his speech to 5,000 people gathered at his alma mater Connecticut University Credit: REUTERS/NASA TV/Handout

Mr Mastracchio is an active Twitter user, and has posted out-of-this-world selfies while carrying out work on the space station.