

Taecking and Date Relay Satellite Lunchers
The umbillical tower drops back from a Unite Lauch Alliance Atlas V 401 rocket as it lifts off space complex 41 on cape cavaneral Air Force Station in Florida.
Launch,with NASA's Tracking and Date Relay Satallite-K or TDRS-K aboard,was at 8:48p.m.EST on Jan.30.
The TDRS-K spacecraft is part of the next-generation series in the Tracking
and Date Relay Satellite System,a constellation of space-based cpmmunication satallites providing tracking,telemetry,command and high-bandwith date return servise.
umbilical: membranous duct connecting the fetus with the placents
tower:a steucture taller than its diameter,can stand alone or be attached to a large building
launcher:armament in the form of a device capable of launching a rocket
complex:a conceptual whole made up of complicated and relate parts.
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