text: Space shuttle Discovery safely arrives at launch pad
  
  May 19, 2006 
  
  On Friday in Cape Canaveral, Florida, Space Shuttle Discovery began its 4.2 mile, 7 hour long journey to the launch pad, completing successfully. Discovery weighs approximately 4.5 million pounds. 
  The launch was supposed to occur in May, but NASA pushed back the date because of a faulty fuel sensor. 
  This will be Discovery's second mission since the space shuttle Columbia broke apart during re-entry in 2003. Engineers believed that foam falling from the shuttle and smashing into the wing caused the disaster. After the accident, NASA grounded the shuttle fleet to determine the cause.
tokens: Space shuttle Discovery safely arrives at launch pad May 19 , 2006 On Friday in Cape Canaveral , Florida , Space Shuttle Discovery began its 4.2 mile , 7 hour long journey to the launch pad , completing successfully . Discovery weighs approximately 4.5 million pounds . The launch was supposed to occur in May , but NASA pushed back the date because of a faulty fuel sensor . This will be Discovery 's second mission since the space shuttle Columbia broke apart during re - entry in 2003 . Engineers believed that foam falling from the shuttle and smashing into the wing caused the disaster . After the accident , NASA grounded the shuttle fleet to determine the cause .
nps.text: Space shuttle Discovery
nps.id: np0
nps.text: launch pad
nps.id: np1
nps.text: Friday
nps.id: np2
nps.text: Cape Canaveral
nps.id: np3
nps.text: Space Shuttle Discovery
nps.id: np4
nps.text: its 4.2 mile
nps.id: np5
nps.text: 7 hour long journey
nps.id: np6
nps.text: the launch pad
nps.id: np7
nps.text: Discovery
nps.id: np8
nps.text: approximately 4.5 million pounds
nps.id: np9
nps.text: The launch
nps.id: np10
nps.text: May
nps.id: np11
nps.text: NASA
nps.id: np12
nps.text: the date
nps.id: np13
nps.text: a faulty fuel sensor
nps.id: np14
nps.text: Discovery's second mission
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nps.text: the space shuttle Columbia
nps.id: np16
nps.text: re-entry
nps.id: np17
nps.text: Engineers
nps.id: np18
nps.text: foam
nps.id: np19
nps.text: the shuttle
nps.id: np20
nps.text: the wing
nps.id: np21
nps.text: the disaster
nps.id: np22
nps.text: the accident
nps.id: np23
nps.text: NASA
nps.id: np24
nps.text: the shuttle fleet
nps.id: np25
nps.text: the cause
nps.id: np26
nps.text: Florida
nps.id: np27
nps.text: 2003
nps.id: np28