CAPE CANAVERAL, Fla. – Space shuttle Atlantis sits on Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. Beyond the shuttle on the horizon is the Atlantic Ocean. At left, behind the shuttle, is the 300,000-gallon water tower which releases water over the pad for sound suppression during liftoff. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis sits on Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. At left is the rotating service structure with the payload changeout room that allows transfer of payloads from a canister into the shuttle's payload bay. Next to the shuttle is the fixed service structure with its 80-foot lightning mast on top. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Under early morning light, space shuttle Atlantis makes its slow way to Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – After rollout from the Vehicle Assembly Building, clouds filter the morning sun as space shuttle Atlantis rolls out to Launch Pad 39A at NASA's Kennedy Space Center in Florida. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis moves along the crawlerway at NASA's Kennedy Space Center in Florida on its rollout to Launch Pad 39A. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. First motion was at 3:54 a.m. EDT. The 3.4-mile trip will take about six hours. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis moves through the open door of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida to roll out to Launch Pad 39A. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. First motion was at 3:54 a.m. EDT. The 3.4-mile trip will take about six hours. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis sits on Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. At left is the rotating service structure with the payload changeout room that allows transfer of payloads from a canister into the shuttle's payload bay. Next to the shuttle is the fixed service structure with its 80-foot lightning mast on top. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – In the early morning hours, space shuttle Atlantis rolls out to Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis moves through the open door of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida to roll out to Launch Pad 39A. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. First motion was at 3:54 a.m. EDT. The 3.4-mile trip will take about six hours. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – After rollout from the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the turn basin captures the image of space shuttle Atlantis as it travels the crawlerway to Launch Pad 39A. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis slowly reaches the top of Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. Beyond the shuttle on the horizon is the Atlantic Ocean. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – The gate to Launch Pad 39A at NASA's Kennedy Space Center in Florida welcomes space shuttle Atlantis onto the pad mound after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis slowly makes its way to the top of Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis passes through the gate at Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. Behind the flag pole can be seen the fixed and rotating service structures on the pad mound. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis slowly crawls across the top of Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis is ready to roll out of the Vehicle Assembly Building to Launch Pad 39A at NASA's Kennedy Space Center in Florida. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. First motion was at 3:54 a.m. EDT. The 3.4-mile trip will take about six hours. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis moves along the crawlerway at NASA's Kennedy Space Center in Florida on its rollout to Launch Pad 39A. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. First motion was at 3:54 a.m. EDT. The 3.4-mile trip will take about six hours. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis begins to roll out of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida to Launch Pad 39A. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. First motion was at 3:54 a.m. EDT. The 3.4-mile trip will take about six hours. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Under cloudy skies, space shuttle Atlantis slowly makes its way to Launch Pad 39A at NASA's Kennedy Space Center in Florida after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath. First motion was at 3:54 a.m. EDT and Atlantis was secured on the pad at 11:17 a.m. The 3.4-mile trip took about seven-and-a-half hours. Atlantis is targeted to lift off May 12 to service NASA's Hubble Space Telescope. During Atlantis' 11-day mission, the crew of seven astronauts will make the final shuttle flight to Hubble. During five spacewalks, they will install two new instruments, repair two inactive ones and replace components. The result will be six working, complementary science instruments with capabilities beyond what is now available, and an extended operational lifespan for the telescope through at least 2014. Photo credit: NASA/Jack Pfaller