Also See:
NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA | NASA

The final defining moment was when NASA, in desperation to see their only remaining project saved, went to the Air Force for its blessing. NASA asked that the AF place all of their future launches on the shuttle instead of their current expendable launchers (like the Titan II), in return for which they would no longer have to continue spending money upgrading those designs -- the shuttle would provide more than enough capability. America's first space station, the 75 ton Skylab was launched May 14, 1973 by a two-stage version of the Saturn V booster (the SL-1 mission). Severe damage was sustained during launch, including the loss of the station's micrometeoroid shield/sun shade and one of its main solar panels. Debris from the lost micrometeroid shield further complicated matters by pinning the remaining solar panel to the side of the station, preventing its deployment and thus leaving the station with a huge power deficit. The station underwent a extensive repair by the first crew launched on May 25, 1973 (the SL-2 mission) atop a Saturn 1B. Two additional missions followed on July 28, 1973 (SL-3) and November 16, 1973 (SL-4) with stay times of 28, 59, and 84 days, respectively. The last Skylab crew returned to Earth on February 8, 1974.

Skylab was actually the refitted S-IVB third stage of a Saturn V booster, a leftover from the Apollo program originally intended for one of the canceled moon landing missions (Apollos 18-20). A product of the Apollo Applications program (a program tasked with finding long-term uses for Apollo program hardware), Skylab was originally planned as a minimially-altered S-IVB to be launched on a Saturn IB rocket. The small size of the IB would have required Skylab to double as a rocket stage during launch, only being retrofitted as a space station once on-orbit. With the cancellation of Apollo missions 18-20 a Saturn V was made available and thus the "Wet Workshop" concept, as it was called, was put aside and Skylab was launched dry and fully outfitted. Skylab's grid flooring system is a highly visable legacy of the wet workshop concept.

Following the last mission the Station was positioned in a parking orbit expected to last at least 8 years. Increased solar activity heating the outer layers of the earth's atmosphere and thereby increasing drag on the Station led to an early reentry on July 11, 1979. Skylab disintegrated over Western Australia and the Indian Ocean, casting large pieces of debris in populated areas (without injury). The reentry prevented any further use by the then unfinished Space Shuttle as was envisioned by some at NASA.

Two flight-quality Skylabs were built, the second, a backup, is on display at the National Air and Space Museum in Washington, DC.

Space Shuttle Endeavour
Space Shuttle Endeavour Shuttle Orbiter Endeavour (NASA Designation: OV-105) is the most recent Space Shuttle orbiter to be built. Construction began in 1987 to replace the Challenger, lost in an accident in 1986. Endeavour was first launched in 1992. The orbiter is named for the HM Bark Endeavour, the ship commanded by 18th century explorer James Cook (which explains the British spelling). Table of contents showTocToggle("show","hide") 1 Flights 2 Related articles 3

Shuttles

Shuttle development

The shuttle program was launched on January 5, 1972, when President Richard M. Nixon announced that NASA would proceed with the development of a reusable low cost space shuttle system.

The project was already to take longer than originally anticipated due to the year-to-year funding caps. Nevertheless work started quickly and several test articles were available within a few years.

Most notable among these was the first complete Orbiter, originally to be known as Constitution. However a massive write-in campaign on the part of fans of the TV show Star Trek convinced the White House to change the name to Enterprise. Enterprise was rolled out on September 17, 1976 and later conducted a very successful series of landing tests which was the first real validation of the gliding abilities of the design.

The first fully functional shuttle orbiter was the Columbia, which was delivered to Kennedy Space Center on March 25, 1979 and was first launched on April 12, 1981 with a crew of two. Challenger was delivered to KSC in July 1982, Discovery was delivered in November 1983, and Atlantis was delivered in April 1985. Challenger was destroyed in an explosion during launch in January 1986 with the loss of all seven astronauts on board, and Endeavour was built as a replacement (using spare parts originally built for the other orbiters) and delivered in May 1991. Columbia was lost, with all seven crew, in a re-entry mishap on February 1, 2003.

A number of designs were proposed, but many of them were complex and varied widely in their systems. An attempt to re-simplify was made in the form of the "DC-3" by one of the few people left in NASA with the political clout to pull it off, Maxime Faget, who had designed the Mercury capsule, among others. The DC-3 was a small craft with a 20,000lbs (or less) payload, a four-man crew, and limited manuverability. At a minimum, the DC-3 provided a baseline "workable" (but not terribly advanced) system by which other systems could be compared for price/performance tradeoffs.

Houston, Texas
covers about 600 square miles in area, and is also the largest city in the United States which does not have zoning laws. Houston is world renowned for its energy industry (particularly oil),aeronautics industry and ship channel. The Port of Houston is the second busiest port in the United States, fifth busiest in the world. Because of the economic trades, many residents have moved in from other U.S. states, as well as hundreds of countries worldwide. Officially, Houston has been nicknamed the Space City. "Houston" was the first word uttered on the moon, as Neil Armstrong reported back to NASA. It is known by the locals, however, as the Bayou City. (Other nicknames include "Clutch City", and "Magnolia City".) The city had placed an unsuccessful bid for the 2012 Summer Olympics.

Teacher in Space Project
Teacher in Space Project Christa McAuliffe (left) and Barbara Morgan pose in front of the Space Shuttle mission simulator (SMS) after their selection for TISP. The Teacher in Space Project (TISP) is a NASA program designed to educate students and spur excitement in math, science, and space exploration. Christa McAuliffe was selected to be the first teacher in space in 1984 with Barbara Morgan as her alternate. McAuliffe died during the launch of the 25th Space Shuttle mission, STS-51-L, which was to make her the first teacher in space. NASA halted the TISP until 1998 amid concerns surrounding the risk of sending civillians to space. Morgan was selected as the first Educator Astronaut in January, 1998. Morgan is assigned to the crew of STS-118 which may launch

International Space Station
International Space Station Continuing on from the United States' Skylab and Russia's Mir, the International Space Station (ISS) represents a permanent human presence in space. The space station is located in orbit around the Earth at an altitude of approximately 386 km, a type of orbit usually termed low Earth orbit. (The actual height varies over time by several kilometres due to atmospheric drag and reboosts.) It orbits Earth at a period of about 92 minutes; on December 1, 2003 it had completed over 28,700 orbits since launch. It is serviced primarily by the Space Shuttle, and Soyuz and Progress spacecraft units. It is still being built, but is home to some experimentation already. At present, the station has a capacity for a crew of three, who

Discover NASA

With the major Apollo development effort winding down in the second half of the 1960s, NASA started looking to the future of the space program. They envisioned an ambitious program consisting of a large space station being launched on huge boosters, served by a reusable logistics "space shuttle", both providing services for a permanantly manned Lunar colony and eventual manned missions to Mars.

Worse, any increase in the weight of the upper portion of a lauch vehicle, which had just occurred, requires an even bigger increase in the capability of the lower stage used to launch it. Suddenly the two-stage system grew in size to something larger than the Saturn V, and the complexity and costs to develop it skyrocketed.