Spaceflight Now



Video Coverage




The most complete source of video from the countdown, launch and mission of space shuttle Discovery is available here!

Video Collection



The Mission




Orbiter: Discovery
Mission: STS-121
Launch: July 4, 2006
Time: 2:38 p.m. EDT (1838 GMT)
Site: Pad 39B, Kennedy Space Center, Florida
Landing: July 17 @ 9:14 a.m. EDT
Site: Shuttle Landing Facility, KSC
Video collection

Mission Status Center

Landing Day Timeline

Master Flight Plan

NASA TV Schedule

Countdown Timeline

Launch Timeline

Shuttle/ISS Calendar

STS-121 Quick-Look

Launch Windows Chart

Ascent Data Packet

Timeline Walkthrough

Rendezvous Burns

Undocking Timeline

Key Personnel List

STS-121 Mission Index

STS-114 Archive



The Crew




Veteran shuttle commander Steven Lindsey leads a seven-person crew launching aboard Discovery for the STS-121 mission.

Crew Quick-Look

CDR: Steven Lindsey

PLT: Mark Kelly

MS 1: Michael Fossum

MS 2: Lisa M. Nowak

MS 3: Stephanie Wilson

MS 4: Piers Sellers

MS 5: Thomas Reiter

Manned Spaceflights

Current Demographics

Spacewalk Statistics



The Vehicle




As America's third reusable space shuttle to fly, Discovery has successfully completed 31 missions since 1984.

STS-121 Hardware

Launch/Landing Chart

Shuttle Flight History




Crack found in Discovery external tank insulation
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: July 3, 2006

Engineers inspecting the shuttle Discovery's external tank following Sunday's launch scrub found a crack in the tank's foam insulation near a bracket holding a 17-inch oxygen feed line in place. Some engineers believe the crack must be repaired but senior managers say a variety of options are on the table, from fly as is to making repairs.

As of this writing, no decisions have been made about how to proceed and it's not known what impact the work might have on plans to make a third attempt to launch Discovery Tuesday.

Engineers also found a small piece of foam insulation resting on the surface of Discovery's mobile launch platform that may be associated with the crack. The crack is located near a bracket toward the top of the hydrogen section of the external tank that holds the liquid oxygen feedline in place. It is not yet known what might have caused the crack, although extreme temperature differences because of the presence of super-cold propellants could have played a role.

"We've got a crack on the feedline bracket area at the top of the LOX feedline where it attaches to the hydrogen tank," said NASA spokeswoman June Malone. "It's the top bracket. I heard four to five inches (long). I don't know that we've not seen this before. The feedline has to flex, it has some bare metal there by design, you've got differences in temperatures."

Updates will be posted here as information becomes available.

Photos of the cracked foam are available here.

Spaceflight Now Plus
Additional coverage for subscribers:
VIDEO: POST-SCRUB SHUTTLE BRIEFING PLAY
VIDEO: ASTROVAN LEAVES PAD 39B AFTER THE SCRUB PLAY
VIDEO: WEATHER SCRUBS LAUNCH FOR SECOND STRAIGHT DAY PLAY
VIDEO: CREW DEPART THEIR QUARTERS FOR THE PAD PLAY
VIDEO: ASTRONAUTS DON SPACESUITS AGAIN PLAY
VIDEO: SUNDAY MORNING'S ASTRONAUT SNACK TIME PLAY

VIDEO: DISCOVERY'S PRE-LAUNCH CAMPAIGN PLAY
VIDEO: THE PAYLOADS OF STS-121 PLAY

VIDEO: WEATHER SCRUBS SATURDAY'S LAUNCH ATTEMPT PLAY
VIDEO: POST-SCRUB INTERVIEW WITH LAUNCH DIRECTOR PLAY
VIDEO: CREW DEPARTS QUARTERS FOR THE PAD PLAY
VIDEO: CREWMEMBERS DON ORANGE SPACESUITS PLAY
VIDEO: ASTRONAUT PHOTO OPP IN DINING ROOM PLAY

VIDEO: INTERVIEW WITH COMMANDER STEVE LINDSEY PLAY
VIDEO: INTERVIEW WITH PILOT MARK KELLY PLAY
VIDEO: INTERVIEW WITH MISSION SPECIALIST 1 MIKE FOSSUM PLAY
VIDEO: INTERVIEW WITH MS 2 LISA NOWAK PLAY
VIDEO: INTERVIEW WITH MS 3 STEPHANIE WILSON PLAY
VIDEO: INTERVIEW WITH MS 4 PIERS SELLERS PLAY
VIDEO: INTERVIEW WITH MS 5 THOMAS REITER PLAY

VIDEO: SHUTTLE MISSION PREVIEW DIAL-UP | BROADBAND
VIDEO: STATION ACTIVITIES ON STS-121 DIAL-UP | BROADBAND
VIDEO: PREVIEW OF DISCOVERY'S SPACEWALKS DIAL-UP | BROADBAND
VIDEO: THE ASTRONAUTS MEET THE PRESS DIAL-UP | BROADBAND
VIDEO: SHUTTLE AND ISS PROGRAM PERSPECTIVE
      DIAL-UP: part 1 and part 2
      BROADBAND: part 1 and part 2
MORE: STS-121 VIDEO COVERAGE
SUBSCRIBE NOW

ERROR: Random File Unopenable

ERROR: Random File Unopenable

The random file, as specified in the $random_file perl variable was unopenable.

The file was not found on your file system. This means that it has either not been created or the path you have specified in $trrandom_file is incorrect.
John Glenn Mission Patch

Free shipping to U.S. addresses!

The historic first orbital flight by an American is marked by this commemorative patch for John Glenn and Friendship 7.
 U.S. STORE
 WORLDWIDE STORE

Final Shuttle Mission Patch

Free shipping to U.S. addresses!

The crew emblem for the final space shuttle mission is available in our store. Get this piece of history!
 U.S. STORE
 WORLDWIDE STORE

Celebrate the shuttle program

Free shipping to U.S. addresses!

This special commemorative patch marks the retirement of NASA's Space Shuttle Program. Available in our store!
 U.S. STORE
 WORLDWIDE STORE

Anniversary Shuttle Patch

Free shipping to U.S. addresses!

This embroidered patch commemorates the 30th anniversary of the Space Shuttle Program. The design features the space shuttle Columbia's historic maiden flight of April 12, 1981.
 U.S. STORE
 WORLDWIDE STORE

Mercury anniversary

Free shipping to U.S. addresses!


Celebrate the 50th anniversary of Alan Shephard's historic Mercury mission with this collectors' item, the official commemorative embroidered patch.
 U.S. STORE
 WORLDWIDE STORE

Fallen Heroes Patch Collection
The official patches from Apollo 1, the shuttle Challenger and Columbia crews are available in the store.
 U.S. STORE
 WORLDWIDE STORE

MISSION INDEX

INDEX | PLUS | NEWS ARCHIVE | LAUNCH SCHEDULE
ASTRONOMY NOW | STORE

ADVERTISE

© 2014 Spaceflight Now Inc.