Endeavour Unveiled for Historic Final Blastoff

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Space Shuttle Endeavour unveiled for final blastoff set for May 16, 2011. Endeavour and her six man crew will deliver the $2 Billion Alpha Magnetic Spectrometer to the International Space Station which seeks to determine the origin and evolution of our Universe. Credit: Ken Kremer

KENNEDY SPACE CENTER – A humongous crowd numbering perhaps half a million excited people is expected to witness the historic final blast off of Space Shuttle Endeavour.

Clocks are ticking down as the countdown enters the final phase before Monday morning’s liftoff (May 16) scheduled for 8:56 a.m. EDT from Pad 39 A at NASA’s Kennedy Space Center (KSC).

Endeavour was unveiled for blastoff earlier today as a protective cocoon like structure was pulled away from the shuttle stack. The Rotating Service Structure (RSS) was retracted from around the orbiter starting at 11:45 a.m. over about 45 minutes and under a gorgeous blue sky. See my photo album

Space Shuttle Endeavour awaits launch from Pad 39 A on May 16, 2011. Endeavour will deliver the $2 Billion Alpha Magnetic Spectrometer to the International Space Station. The AMS will search for dark matter, dark energy and antimatter to determine the birth of the Universe. Credit: Ken Kremer

In a lucky break, expected thunderstorms that could have delayed the retraction and launch preparations actually passed through the area overnight, much earlier than expected.

Shuttle managers will gather at 11 p.m. tonight for a critical meeting and decision to give the “Go-No Go” directive to load the External Fuel Tank with supercold liquid hydrogen and liquid oxygen fuel that powers the shuttle main engines for the eight and one half minute climb to orbit. The tanking process is scheduled to begin at 11:36 p.m.

There are no technical issues at this time that would prevent a launch. The weather outlook remains at “70 Percent GO”.

The goal of Endeavour and her all veteran six man crew is to deliver the Alpha Magnetic Spectrometer (AMS) to the International Space Station. The $2 Billion AMS is a state of the art particle physics detector that will search for dark matter, dark energy and antimatter and seek to determine how the Universe was born and evolved.

The 134 mission is set to last 16 days and will feature the final 4 spacewalks of the space shuttle program.