It is so disappointing that they are axing what is effectively our entire space program. It might have been okay for them to dissolve the shuttle program if they had another program to replace it with so they don't. However the good news is that we will be sending Americans to Mars by at least 2030, assuming they don't push the date back like they do every few years.
US space shuttle Endeavour will launch for one last time as NASA space shuttle programme's next-to-last mission. The launch nears the end to the programme's 30-year run.
President Barack Obama and his family are expected to attend Friday's event. Also attending is the wife of the shuttle commander, Congresswoman Gabrielle Giffords, who is recovering from a gunshot wound sustained while meeting constituents in January.
Al Jazeera's Scott Heidler reports from the Kennedy Space Center.
Read more: US shuttle blasts off on final trip - Americas - Al Jazeera English