Photograph credits: NASA

Photograph credits: NASA

Sitting on a rolling platform, the space shuttle Challenger emerges from the mist atKennedy Space Centerin Florida as it heads toward the launch pad, just visible in the distance, in November 1982.Challengerlifted off on its maiden voyage in April 1983 for the sixth shuttle mission.

When the space shuttleAtlantislands on Thursday, it will wrap up STS-135,the final shuttle missionin the U.S. program’s 30-year history. This shot is among those chosen by National Geographic photo editors as the most unforgettable pictures from the entire shuttle program.

Even with the tragic losses of Challenge rand Columbia, the space shuttle has become an icon among U.S. science and technology achievements. During the past three decades, shuttles carried the first U.S. woman and the first African American into space, deployed famous satellites such as the Hubble Space Telescope, and delivered valuable parts and supplies to theInternational Space Station(ISS).

“The space shuttle has been with us at the heart and soul of the human spaceflight program for about 30 years, and it’s a little sad to see it go away,” STS-135 mission commanderChristopher Fergusonrecently told reporters in a televised interview from the ISS.

“It’s going to be an emotional moment for a lot of people that dedicated their lives to the shuttle program for 30 years. But we’re going to try to keep it upbeat … We’re going to try to make it a celebration of the tremendous crowning achievements that have occurred.”

NASA’s space shuttle was unlike any other spacecraft built during the 30 years the program was in operation. Unlike the much smaller capsules of the Apollo era, which launched on the tips of rockets and splashed back into the ocean, the jetliner-size shuttle was designed to streak into space using powerful boosters and return to solid ground as a glider. The craft’s aerodynamic winged shape allowed it to descend through the atmosphere and touch down on a runway, much like a commercial airplane.

While in orbit, the space shuttle circled the planet at some 17,500 miles (28,000 kilometers) an hour, which means that the crew could see a sunrise or sunset every 45 minutes.
NASA’s space shuttle was unlike any other spacecraft built during the 30 years the program was in operation.

Unlike the much smaller capsules of the Apolloera, which launched on the tips of rockets and splashed back into the ocean, the jetliner-size shuttle was designed to streak into space using powerful boosters and return to solid ground as a glider. The craft’s aerodynamic winged shape allowed it to descend through the atmosphere and touch down on a runway, much like a commercial airplane.

While in orbit, the space shuttle circled the planet at some 17,500 miles (28,000 kilometers) an hour, which means that the crew could see a sunrise or sunset every 45 minutes.

After liftoff from Florida’s John F. Kennedy Space Center, a typical space shuttle mission lasted ten days to two weeks and included a full schedule of scientific experiments and technological maintenance. Astronauts performed a variety of tasks aloft, including satellite repair and construction of the International Space Station. Each of the shuttles was specially equipped for such functions, most notably with a large cargo bay and a robotic manipulator arm.

Program Lift off

On April 12, 1981, John Young and Robert Crippen launched the space shuttle program by pilotingColumbiato space and returning successfully two days later.
In 1983 space shuttle astronaut Sally Ride became the first U.S. woman in space as part of the Challenger crew.

The program was a tremendous success for NASA, but it also endured several tragedies. A string of successful missions was broken in 1986 when Challenger disintegrated seconds after liftoff, killing its seven-person crew.
The space shuttle program was suspended in the wake of the accident, and no shuttles were launched for nearly three years. The program rebounded in April 1990 with the successful mission of Discovery.

Astronauts on this momentous flight placed the Hubble Space Telescopeinto orbit. This incredible imaging device has subsequently added much to our understanding of the cosmos while returning otherworldly images that bring the universe to life.
In 1995 the space

shuttle Atlantis successfully docked at the Russian space station Mir, bringing the two great space programs closer together in an era of cooperation that stood in marked contrast to the early days of the space race.

Tragedy struck again in February 2003 when the program lost its second shuttle:Columbiadisintegrated over Texas just 16 minutes before its scheduled landing, and all seven crew members were lost.

Despite this heartbreaking setback, the space shuttle was flying regularly again by 2006. In February 2008Atlantisdelivered the European Space Agency’s Columbus laboratory to the ISS. And in February 2010Endeavourbrought up the Cupola, a robotic control station with seven windows that provides the ISS crew with a 360-degree view.
End of an Era

In 2004 U.S. President George W. Bush announced that the space shuttles would be retired. The final flight came to a close whenAtlantistouched down at Kennedy Space Center on July 21, 2011. The three remaining orbiters and the prototype shuttle,Enterprise,will now be housed in museums in California, Florida, New York, and Virginia.

For its next phase of manned space exploration, NASA is designing and building the spacecraft needed to send humans deeper into the solar system, working toward a goal of putting people on Mars. The Multi-Purpose Crew Vehicle, for example, is being developed to take four astronauts on 21-day missions. NASA is also developing the Space Launch System, an advanced heavy-lift launch vehicle designed for human exploration beyond Earth’s orbit.

In addition, the space agency is partnering with private companies such as Space Exploration Technologies Corporation, or SpaceX, to launch commercial vehicles to the ISS-and perhaps beyond.

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