The U.S. space agency, NASA, says it has recovered the remains of all seven astronauts killed in the shuttle Columbia disaster. Their flag-draped coffins have been flown to a military mortuary in Delaware.

The astronaut remains have arrived aboard a military cargo aircraft at Dover Air Force base in Delaware, the largest U.S. military mortuary.

A top NASA spaceflight official rendered honors when the coffins were lowered from the aircraft.

Earlier in the day, a military color guard accompanied the coffins while they were loaded onto the flight to Delaware at the Louisiana air force base being used as one of two collection points for debris from the shuttle calamity.

At Dover Air Force Base, military morticians are preparing the astronauts' remains for return to their families. Those of the first Israeli to fly in space, Ilan Ramon, will return to Israel.