NASA Begins Mock Countdown for Next Shuttle Launch

NASA Begins Mock Countdown for Next Shuttle Launch
The STS-121 crew speaks to the media near slidewire baskets used in emergency launch pad evacuation while the shuttle Discovery sits atop Launch Pad 39B in the background. At the microphone is Commander Steven Lindsey. Behind him are (from left) Mission Specialists Michael Fossum and Lisa Nowak, Pilot Mark Kelly and Mission Specialists Stephanie Wilson, Piers Sellers and Thomas Reiter of Germany, who represents the European Space Agency. Image (Image credit: NASA/Kim Shiflett.)

CAPECANAVERAL, Fla. - The clock is ticking down towards a mock Thursday launch forNASA's STS-121 astronauts, who are preparing to ride the space shuttleDiscovery into orbit on July 1.

The launchdress rehearsal, a two-day training session known as a TerminalCountdown Demonstration Test (TCDT) here at NASA's Kennedy Space Center(KSC), is one of the final milestones before the STS-121 crew launches aboardDiscovery next month.

"I've beentelling the crew that I'm guaranteeing July 1 but, as I get told at home, I'mquite often wrong," STS-121 commander Steven Lindsey said Tuesday in a pressbriefing at Discovery's launch pad. "I don't really know of anything out therethat would preclude a July 1 launch."

The STS-121astronaut crew will fly NASA's second orbiter test flight since the 2003 Columbia accident. Afterlong delays and major revisionsof shuttle externaltank, the Discovery astronauts are now less than three weeks from theopening of their 19-day launch window. A specific launch date is expected to beannounced on Saturday.

"We'reexcited to be here in sight of the launch pad at last," STS-121 missionspecialist Michael Fossum said. "I won't say we're perfect, but we're as goodas we're going to get."

Lindsey andhis fellow crewmates were scheduled to spend today conducting emergency launchpad escape drills on the Pad 39B gantry 195 feet (59 meters) above thesurrounding area, as well as attend a series of meetings to discuss theDiscovery orbiter, STS-121 payload and operations issues, NASA KSC spokespersonTracy Young told

"The vastamount of our training is at [Johnson Space Center in Houston] in a simulator,but if you look behind me, this is no simulator," said Lindsey, referring tothe Discovery orbiter perched in launch position atop Pad 39B behind him andhis crewmates. "This event, more than any other, makes us feel like it's realand we're almost ready to go."

In additionto Lindsey and Fossum, STS-121 pilot Mark Kelly, mission specialists, LisaNowak, Stephanie Wilson, Piers Sellers and European Space Agency astronautThomas Reiter are participating in the TCDT training.

"Thisorbiter's been well taken care of for the last year since it landed for STS-114," Kelly said ofDiscovery. "We are very comfortable that it's in perfect condition for flight."

NASA'sSTS-114 mission launched in July 2005 on the first post-Columbia shuttleflight, a 14-day mission that ended with a successful landing at Edwards AirForce Base in California.

OnThursday, the crew will don their orange flight suits and walk out to thelaunch pad for a mock launch countdown inside the Discovery vehicle.

At leasttwo STS-121 astronauts are keeping an eye on the ongoing World Cup 2006 soccer tournamentplaying out in Germany. Germany-born Reiter and Sellers, of England, are both admitted soccer fans and are following their national teams even as they preparefor Discovery's upcoming launch.

"He's a Germany fan, I'm an England fan, and we're both backup Brazil fans," Sellers said of himself andReiter.

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Tariq Malik

Tariq is the Editor-in-Chief of and joined the team in 2001, first as an intern and staff writer, and later as an editor. He covers human spaceflight, exploration and space science, as well as skywatching and entertainment. He became's Managing Editor in 2009 and Editor-in-Chief in 2019. Before joining, Tariq was a staff reporter for The Los Angeles Times covering education and city beats in La Habra, Fullerton and Huntington Beach. In October 2022, Tariq received the Harry Kolcum Award for excellence in space reporting from the National Space Club Florida Committee. He is also an Eagle Scout (yes, he has the Space Exploration merit badge) and went to Space Camp four times as a kid and a fifth time as an adult. He has journalism degrees from the University of Southern California and New York University. You can find Tariq at and as the co-host to the This Week In Space podcast with space historian Rod Pyle on the TWiT network. To see his latest project, you can follow Tariq on Twitter @tariqjmalik.