“The Columbia is lost. There are no survivors. This day has brought great sadness to our country.”

These were the words of President George W. Bush as he addressed the nation and the world about the space shuttle Columbia disaster of Feb. 1.

Exploration of space, its heroes and heartaches, have been a subject for numerous U.S. stamps since 1962 when a four-cent stamp honoring Project Mercury was issued. This was followed in 1967 with a pair of 5-cent stamps featuring a space-walking astronaut and the Gemini 4 capsule.

Among the many tributes and accomplishments of the space program have been views of Apollo 8; Apollo Soyuz; astronauts working in space, exploring the solar system; future mail transportation; landing on the moon; Mariner 10; Mercury; Mars Pathfinder; Palomar Mountain Observatory; Pioneer 10; the shuttle and the space station; Sky Lab 1; Star Trek; United States launches satellites; and Viking missions.

The latest space exploration stamps were issued in 2000 with the theme “Probing the Vastness of Space.” Various stamps illustrated the sights from the Hubble telescope and were a tribute to the work of Edwin Powell Hubble.

The legacy of Hubble, who died in 1953, is well-represented by the Hubble space telescope. The Hubble is the largest and most complex astronomical observatory ever placed in orbit.