"I don't think you can take a final voyage of a ship of exploration and not take some moments to celebrate its history," Barratt said. "As many people know, our ship Discovery, which is a ship of exploration, was named after several predecessor ships, all named Discovery, all ships of exploration.

"It's the culmination of a great heritage, really, and we hope there are future ships bearing that name. We will be carrying a medallion from the Royal Society that was struck in honor of Captain Cook. On Cook's third voyage, there was a ship called Discovery and that's the main ship for which our ship took its name. We'll be doing a few other taped commemoratives on it as well. But again, you cannot not celebrate the history and the heritage of this ship."

The contract authorizing construction of Discovery was awarded Jan. 29, 1979, and initial work to begin building the crew module began the following August. The spacecraft was completed at North American Rockwell's Palmdale, Calif., plant in October 1983 and was ferried to the Kennedy Space Center Nov. 9, 1983.

Following an on-pad main engine test firing June 2, 1984, NASA attempted to launch Discovery on its maiden voyage the following June 26. But in a moment of high drama, the shuttle's main engines shut down seconds after ignition because of a sluggish fuel valve.

The problem was corrected, and commander Henry Hartsfield and his crew, including Challenger astronaut Judith Resnik, finally blasted off Aug. 30, 1984, on a successful mission to deploy three commercial communications satellites and to test space station construction techniques.

Over the next 26 years and 38 flights, Discovery carried out four military missions, two Spacelab science flights, two visits to the Russian Mir space station, one Mir docking and 12 missions to the International Space Station. At least 24 civilian and military satellites were carried into space, including the Hubble Space Telescope.

During Discovery's final mission, the ship will make its 13th docking with the space station, and its crew will carry out the orbiter's 50th and 51st spacewalks.

Veteran of two on-pad launch aborts, Discovery also flew the return-to-flight missions following the 1986 destruction of the shuttle Challenger and the 2003 loss of Columbia. In addition, two stranded communications satellites were plucked out of orbit by spacewalking astronauts and brought back to Earth for repairs in November 1984 in what many veterans consider the most daring shuttle mission ever attempted.

Going into its final flight, Discovery had logged 142,917,535 miles traveled over 5,540 orbits, carrying 246 astronauts and cosmonauts into space, including former senator and Mercury astronaut John Glenn and Eileen Collins, the first woman to pilot and later command a space shuttle.

"When you really look at the space shuttle and its capability, it can do everything, everything you can think of in space except for one thing, it can't leave low-Earth orbit, but it can do everything else," Lindsey said in a NASA interview. "It can do robotics. It can do science. It can go dock. When you dock with the space station, in the end you have to maintain a three-inch corridor and one degree of attitude error and you can easily fly the shuttle manually and maintain that. I mean, that's unbelievable for a 120-ton vehicle.

"I don't think there's going to be another one that's ever going to match the versatility of the space shuttle, and I think that's the legacy. All the systems we've developed and things we've done on space station, or on space shuttle, have all had impacts in our society. I mean, literally any room you walk in, anything you do during the day, you can point at things in that room and say, 'That came out of the space program. This came from shuttle. This came from Apollo. This came from space station' and you can see it all around you.

"The public's not real aware of all of that ... and it's very hard to measure, but it's all there if you really think about it, and I think that's the legacy. I think the legacy is that all these things came out of it, and people take all of those things for granted."

NASA managers are considering a variety of options for Discovery's post-landing processing. Some have suggested maintaining the orbiter in a flight-ready state for as long as possible. Others have recommended using the orbiter for spare parts until Atlantis and Endeavour complete their final missions. Shannon favors a combination of approaches.

"We're in the middle of a very significant effort to identify hardware off of Discovery and also in the spares (inventory) that could be used for some future as yet unknown program, or that we would want to maintain as spares for Endeavour and Atlantis," Shannon said.

"We're also going to pull some off as engineering teaching units so that future generations will be able to take the hardware that was flown on the shuttle and dissect it and understand the engineering and how it was put together. We're also going to go in and look at some hardware on Discovery that has flown for 30 years that we've never looked at before. Things like actuators and some structural areas that are impossible to get to.

"Those will be fairly invasive, it will take time and it will take money," he said. "But I think that's one of the legacies the shuttle can provide. ... So even after Discovery lands, we will not be finished learning about the space environment. That's my goal, to start immediately on that."

No matter how the end game plays out, Discovery eventually will be shipped to a museum and put on display. But with nearly two dozen museums vying for one of NASA's three orbiters, it's not yet clear where Discovery will end up. A decision is expected later this year.

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Additional coverage for subscribers:
VIDEO: LAUNCH COUNTDOWN PREVIEW AND WEATHER FORECAST PLAY
VIDEO: ASTRONAUTS ARRIVE AT LAUNCH SITE AGAIN PLAY | HI-DEF
VIDEO: DISCOVERY CLEARED FOR LAUNCH ON FEB. 24 PLAY

VIDEO: STEVE BOWEN BEGINS CREW TRAINING PLAY | HI-DEF

VIDEO: SUN RISES OVER SPACEPORT AFTER ROLLOUT PLAY | HI-DEF
VIDEO: SHUTTLE ARRIVES ATOP LAUNCH PAD 39A AGAIN PLAY | HI-DEF
VIDEO: CROWDS CHEER ON DISCOVERY'S ROLLOUT PLAY | HI-DEF
VIDEO: DISCOVERY RE-EMERGES FROM THE VAB PLAY | HI-DEF
VIDEO: LAUNCH TEAM PRACTICES PROCEDURES PLAY | HI-DEF

VIDEO: FRESH FOAM APPLIED TO EXTERNAL TANK PLAY | HI-DEF

VIDEO: ROOT CAUSE OF SHUTTLE TANK CRACKS FOUND PLAY

VIDEO: REPAIRS AND STRENGTHENING TO TANK PLAY | HI-DEF
VIDEO: DIGITAL X-RAY INSPECTIONS IN THE VAB PLAY | HI-DEF
VIDEO: WORK UNDERWAY TO REMOVE FOAM AND SENSORS PLAY | HI-DEF
VIDEO: SETTING UP ACCESS PLATFORMS AROUND TANK PLAY | HI-DEF

VIDEO: SHUTTLE ROLLED BACK TO ASSEMBLY BUILDING PLAY | HI-DEF
VIDEO: DISCOVERY DEPARTS LAUNCH PAD 39A PLAY | HI-DEF
VIDEO: LUNAR ECLIPSE OVER DISCOVERY PLAY | HI-DEF

VIDEO: HIGHLIGHTS FROM THE FUELING TEST PLAY | HI-DEF
VIDEO: RECAP OF THE FUELING EXERCISE PLAY
VIDEO: FUELING TEST COUNTDOWN UPDATE PLAY
VIDEO: COMMENTS FROM SHUTTLE LAUNCH DIRECTOR PLAY
VIDEO: GROUND UMBILICAL CARRIER PLATE CHECKED PLAY
VIDEO: INFO ON EXTERNAL TANK INSTRUMENTATION PLAY
VIDEO: DETAILED INFORMATION ON SPECIAL FUELING TEST PLAY

VIDEO: SHUTTLE DISCOVERY'S LAUNCH DELAYED TO FEBRUARY PLAY

VIDEO: FINAL PREPS FOR INSTRUMENTED TEST PLAY | HI-DEF
VIDEO: STRAIN GAUGES ATTACHED TO TANK PLAY | HI-DEF
VIDEO: BACKSCATTER INSPECTIONS OF TANK MIDSECTION PLAY | HI-DEF

VIDEO: INSTALLING DOUBLERS OVER STRINGERS PLAY | HI-DEF
VIDEO: GASEOUS HYDROGEN VENT ARM RETURNED PLAY | HI-DEF
VIDEO: DOUBLERS TO BEEF UP CRACKED BEAMS PLAY | HI-DEF
VIDEO: HYDROGEN FITTING IS REINSTALLED PLAY | HI-DEF
VIDEO: OPENING UP TANK'S ENTRANCE DOOR PLAY | HI-DEF
VIDEO: GUCP DETACHED AND SEALS REMOVED PLAY | HI-DEF
VIDEO: BROKEN FOAM REMOVED FROM THE TANK PLAY | HI-DEF
VIDEO: VENT ARM LETS GO FROM LEAKY GUCP PLAY | HI-DEF
VIDEO: DISCOVERY AWAITS REPAIRS TO TANK PROBLEMS PLAY | HI-DEF

VIDEO: INFORMATIVE DESCRIPTION OF TANK CRACK PROBLEM PLAY
VIDEO: DISCOVERY'S LAUNCH DELAYED TO MID-DECEMBER PLAY

VIDEO: GASEOUS HYDROGEN VENT ARM DETACHED FROM SHUTTLE PLAY

VIDEO: STS-133 MISSION PREVIEW MOVIE PLAY | HI-DEF
VIDEO: SHUTTLE DISCOVERY CREW BIOGRAPHIES PLAY | HI-DEF
VIDEO: ISS EXPEDITION 25-26 PREVIEW MOVIE PLAY | HI-DEF
VIDEO: SPACE STATION CREW BIOGRAPHIES PLAY | HI-DEF

VIDEO: POST-SCRUB NEWS BRIEFING ON LEAK PLAY
VIDEO: GASEOUS HYDROGEN LEAK SCRUBS LAUNCH PLAY | HI-DEF
VIDEO: BAD WEATHER DELAYS DISCOVERY LAUNCH PLAY
VIDEO: ELECTRICAL ISSUE NO LONGER A CONCERN FOR DISCOVERY PLAY
VIDEO: LAUNCH POSTPONED BY ELECTRICAL CONCERN PLAY
VIDEO: TUESDAY MORNING'S COUNTDOWN STATUS CHECK PLAY
VIDEO: DISCOVERY'S PRE-LAUNCH NEWS CONFERENCE PLAY
VIDEO: COUNTDOWN PREVIEW BRIEFING AND WEATHER FORECAST PLAY
VIDEO: ANOTHER 24-HOUR DELAY ORDERED TO FINISH REPAIRS PLAY
VIDEO: LAUNCH DELAYED 24 HOURS BY LEAK REPAIRS PLAY

VIDEO: ASTRONAUTS ARRIVE FOR LAUNCH PLAY | HI-DEF

VIDEO: FLIGHT READINESS REVIEW SETS LAUNCH DATE PLAY

VIDEO: SHUTTLE AND STATION PROGRAM BRIEFING PLAY
VIDEO: THE STS-133 MISSION OVERVIEW PRESENTATIONS PLAY
VIDEO: PREVIEW BRIEFING ON MISSION'S SPACEWALKS PLAY
VIDEO: IN-DEPTH BACKGROUND ON ROBONAUT 2 HUMANOID PLAY
VIDEO: THE ASTRONAUTS' PRE-FLIGHT NEWS BRIEFING PLAY

VIDEO: PAYLOAD BAY DOORS CLOSED FOR LAUNCH PLAY | HI-DEF
VIDEO: CREW LEAVES KSC FOR TRIP TO HOUSTON PLAY | HI-DEF
VIDEO: ASTRONAUTS INSPECT THE PAYLOAD BAY PLAY | HI-DEF
VIDEO: SHUTTLE EVACUATION PRACTICE PLAY | HI-DEF
VIDEO: ASTRONAUTS EGRESS SHUTTLE AS SEEN LIVE PLAY
VIDEO: ASTRONAUTS BOARD DISCOVERY PLAY | HI-DEF
VIDEO: SUN RISES ON LAUNCH PAD 39A PLAY | HI-DEF
VIDEO: LAUNCH DAY REHEARSAL BEGINS PLAY | HI-DEF
VIDEO: COMMEMORATIVE WALL SIGNING IN VAB PLAY | HI-DEF
VIDEO: CREW BRIEFED ON EMERGENCY PROCEDURES PLAY | HI-DEF
VIDEO: IN SHUTTLE TRAINING AIRCRAFT'S COCKPIT PLAY | HI-DEF
VIDEO: TEST-DRIVING AN EMERGENCY ARMORED TANK PLAY | HI-DEF

VIDEO: PRE-LAUNCH INTERVIEW WITH STEVE LINDSEY PLAY
VIDEO: PRE-LAUNCH INTERVIEW WITH ERIC BOE PLAY
VIDEO: PRE-LAUNCH INTERVIEW WITH AL DREW PLAY
VIDEO: PRE-LAUNCH INTERVIEW WITH TIM KOPRA PLAY
VIDEO: PRE-LAUNCH INTERVIEW WITH MIKE BARRATT PLAY
VIDEO: PRE-LAUNCH INTERVIEW WITH NICOLE STOTT PLAY

VIDEO: PAYLOADS INSTALLED INTO DISCOVERY PLAY | HI-DEF
VIDEO: MISSION PAYLOADS ARRIVE AT LAUNCH PAD PLAY | HI-DEF
VIDEO: CANISTER HAULING PAYLOADS TURNED UPRIGHT PLAY | HI-DEF
VIDEO: MODULE HOISTED INTO SHIPPING CANISTER PLAY | HI-DEF
VIDEO: WEIGHING NEW SPACE STATION MODULE PLAY | HI-DEF

VIDEO: GANTRY PLACED AROUND DISCOVERY PLAY | HI-DEF
VIDEO: SHUTTLE ATLANTIS REACHES PAD 39A PLAY | HI-DEF
VIDEO: CROWDS WATCH DISCOVERY'S FINAL ROLLOUT PLAY | HI-DEF

VIDEO: SHUTTLE HOISTED FOR ATTACHMENT TO TANK PLAY | HI-DEF
VIDEO: CRANE ROTATES THE ORBITER VERTICALLY PLAY | HI-DEF
VIDEO: DISCOVERY DEPARTS ITS HANGAR PLAY | HI-DEF

VIDEO: TIME-LAPSE SHOWS DISCOVERY ASCENDING IN VAB PLAY
VIDEO: TIME-LAPSE SHOWS THE MOVE TO ASSEMBLY BUILDING PLAY

VIDEO: DISCOVERY'S MAIDEN FLIGHT: FIRST TRIP TO VAB PLAY
VIDEO: DISCOVERY'S MAIDEN FLIGHT: ROLLOUT TO PAD 39A PLAY
VIDEO: DISCOVERY'S MAIDEN FLIGHT: TEST-FIRING ENGINES PLAY
VIDEO: DISCOVERY'S MAIDEN FLIGHT: ASSORTED VIEWS OF FRF PLAY

VIDEO: THE HISTORY OF SHUTTLE DISCOVERY PLAY
VIDEO: THE HISTORY OF SHUTTLE ENDEAVOUR PLAY
VIDEO: THE HISTORY OF SHUTTLE ATLANTIS PLAY

VIDEO: INSPECTION OF THE MISSION PAYLOADS PLAY | HI-DEF
VIDEO: ROBONAUT ARRIVES AT KENNEDY SPACE CENTER PLAY | HI-DEF
VIDEO: SPACE STATION'S SPARE THERMAL RADIATOR PLAY | HI-DEF
VIDEO: BLANKETING LEONARDO WITH INSULATION PLAY | HI-DEF
VIDEO: RACK INSERTED INTO LEONARDO FOR LAUNCH PLAY | HI-DEF
VIDEO: LEONARDO RETURNS FROM ITS PREVIOUS FLIGHT PLAY | HI-DEF
VIDEO: STATION'S SPARE PARTS DEPOT ARRIVES PLAY | HI-DEF

VIDEO: ORBITER'S PAYLOAD BAY CLOSED FOR ROLLOUT PLAY | HI-DEF
VIDEO: ASTRONAUTS VISIT THEIR SPACECRAFT PLAY | HI-DEF
VIDEO: CREW INSPECTS LEONARDO MODULE PLAY | HI-DEF
VIDEO: DISCOVERY RECEIVES ITS MAIN ENGINES PLAY | HI-DEF
VIDEO: FUEL TANK MATED TO SOLID ROCKET BOOSTERS PLAY | HI-DEF
VIDEO: HOISTING FUEL TANK INTO CHECKOUT BAY PLAY | HI-DEF
VIDEO: EXTERNAL FUEL TANK UNLOADED FROM BARGE PLAY | HI-DEF
VIDEO: MISSION'S FUEL TANK ARRIVES AT SPACEPORT PLAY | HI-DEF

VIDEO: POST-FLIGHT DESERVICING: OMS POD PLAY | HI-DEF
VIDEO: POST-FLIGHT DESERVICING: OBSS BOOM PLAY | HI-DEF
VIDEO: POST-FLIGHT DESERVICING: ENGINES PLAY | HI-DEF
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