On 25 Anniversary NASA New Space Shuttle Challenger

NASA is recalling three great tragedies of its history this week, starting with the 25 anniversary of the Challenger space shuttle explosion on Friday.
"This year marks the 25 anniversary of the Challenger loss, a tragedy that made us completely rethink our systems and processes we have worked to make transportation safer," said NASA Administrator Charles Bolden in a report AFP.
Together with the deputy administrator Lori Garver, Bolden honored the lives of those lost in the Apollo 1 and Challenger and Columbia space shuttle, by laying a wreath at Arlington National Cemetery in Virginia last week.
"The nation will never forget January 28, 1986, and its unforgettable images," said Bolden.
the entire crew was killed when the Challenger shuttle exploded 73 seconds after its launch, 46,000 feet in the air. The explosion was broadcast live on television. Challenger explosion
In 2003, a defective heat shield performance caused Columbia to disintegrate as it re-entered Earth's atmosphere, killing seven astronauts. A fire aboard Apollo 1 was fatal to the crew of three in 1967. This mission was the first of NASA's manned trips to the moon.
Since 1964, 24 people have died in a NASA mission, but NASA says it has learned since then.
"Safety is the number one priority at NASA and the shuttle launch schedule does not conduct discussions or decisions when problems arise," said a NASA spokesman PC Magazine. "That is repeated often and you can check on events in the media about the problems."
Apollo 1 Perhaps the most telling example is the recent delays in the upcoming launch of space shuttle Discovery. The ship was originally set to take off on its final voyage on November 1, but due to leakage, problems of bad weather, electrical problems, and equipment, the mission was delayed for more than half a dozen times. It is now scheduled to launch Feb. 24.
"NASA has learned hard lessons from each of our tragedies, and are lessons that we will continue to keep in the forefront of our work, we continually strive for a culture of security that will help us avoid past errors and warnings , while corrective measures are possible, "said Bolden.
After Discovery, the shuttle Endeavour was supposed to launch on 18 April, the AFP. Moreover, if Congress hands over the necessary funds, NASA hopes to send space shuttle Atlantis in orbit an extra trip.