The Spitzer Space Telescope is transferred from the clean room to the top of its Delta II rocket on August 10, 2003.

The Spitzer Space Telescope is transferred from the clean room to the top of its Delta II rocket on August 10, 2003.

The Spitzer Space Telescope is transferred from the clean room to the top of its Delta II rocket on August 10, 2003.

The Spitzer Space Telescope is transferred from the clean room to the top of its Delta II rocket on August 10, 2003.

The Spitzer Space Telescope is transferred from the clean room to the top of its Delta II rocket on August 10, 2003.

Workers at Kennedy Space Center on August 5, 2003 enclose the Spitzer Space Telescope in its payload canister, which protects the Observatory on its journey to the launch pad.

Workers at Kennedy Space Center on August 5, 2003 enclose the Spitzer Space Telescope in its payload canister, which protects the Observatory on its journey to the launch pad.

Workers at Kennedy Space Center on August 5, 2003 enclose the Spitzer Space Telescope in its payload canister, which protects the Observatory on its journey to the launch pad.

Workers at Kennedy Space Center on August 5, 2003 enclose the Spitzer Space Telescope in its payload canister, which protects the Observatory on its journey to the launch pad.

Workers at Kennedy Space Center on August 5, 2003 enclose the Spitzer Space Telescope in its payload canister, which protects the Observatory on its journey to the launch pad.

Workers prepare to hoist the second stage of Spitzer's Delta II rocket up the tower at pad 17-B on Cape Canaveral Air Force Station.

The second stage of Spitzer's Delta II rocket is moved into position atop the first stage on Cape Canaveral Air Force Station's pad 17-B.

The second stage of Spitzer's Delta II rocket is hoisted up the tower at pad 17-B on Cape Canaveral Air Force Station.

The second stage of Spitzer's Delta II rocket is moved into position atop the first stage on Cape Canaveral Air Force Station's pad 17-B.

Workers prepare to hoist the second stage of Spitzer's Delta II rocket up the tower at pad 17-B on Cape Canaveral Air Force Station.

The second stage of Spitzer's Delta II rocket is moved into position atop the first stage on Cape Canaveral Air Force Station's pad 17-B.

The second stage of Spitzer's Delta II rocket is moved into position atop the first stage on Cape Canaveral Air Force Station's pad 17-B.

The second stage of Spitzer's Delta II rocket is moved into position atop the first stage on Cape Canaveral Air Force Station's pad 17-B.

The first stage of Spitzer's Delta II rocket sits on pad 17-B at Cape Canaveral Air Force Station.

A solid rocket booster is lifted into position in order to be mated to the first stage of Spitzer's Delta II rocket.

Solid rocket boosters are loaded into the mobile service tower in order to be mated to the first stage of Spitzer's Delta II rocket.

Additional solid rocket boosters wait to be mated to the first stage of Spitzer's Delta II rocket

A solid rocket booster is lifted into position in order to be mated to the first stage of Spitzer's Delta II rocket.

Additional solid rocket boosters wait to be mated to the first stage of Spitzer's Delta II rocket

A solid rocket booster waits to be lifted into position for mating to the first stage of Spitzer's Delta II rocket.

A solid rocket booster is lifted into position in order to be mated to the first stage of Spitzer's Delta II rocket.

A solid rocket booster is lifted into position in order to be mated to the first stage of Spitzer's Delta II rocket.

On July 18, 2003, the first stage of Spitzer's Delta II rocket is raised off the transporter before lifting it up and moved into the mobile service tower.

On Launch Complex 17-B, Cape Canaveral Air Force Station, the first stage of Spitzer's Delta II rocket is lifted up the mobile service tower on July 18, 2003. Below the rocket is the flame trench, and in the foreground is the overflow pool.

On July 18, 2003, the first stage of Spitzer's Delta II rocket is raised off the transporter before lifting it up and moved into the mobile service tower.