30 years after the shuttle explosion shocked the United States

More than a minute after leaving the launch pad, the space shuttle Challenger, one of the pride of American aerospace, exploded in front of millions of people.

The Challenger launch event has a special meaning, when a teacher will directly lecture from Earth orbit.Christa McAuliffe, a social studies teacher at Concord, New Hampshire High School, was selected by NASA.Long time before the trip, people considered it a blessing for her.

The Challenger carries out its historic mission at the Kennedy Space Center, Florida.Months ago, people rushed to complete the stages to be ready to launch ships into space.

The special system takes Challenger and boosters from the container to the launch pad.The Challenger, also known as OV-099, made its first takeoff in April 1983.By the time of the accident in 1986, the ship had accomplished 10 missions with orbital time of 62 days, 7 hours, 56 minutes and 22 seconds.It turns 995 around the earth orbit and travels over a distance of 41.5 million kilometers.

7 members of Challenger ship crew before launch time.From left to right is Christa McAuliffe, Gregory Jarvis, Judy Resnik, commander Dick Scobee, Ronald McNair, pilot Michael Smith and Ellison Onizuka.

Challenger left the launch pad on January 28, 1986 in the presence of millions of people, including thousands of young children cherishing their wish to become astronauts.

The moment when the solid fuel boosters on the right side of the Challenger ship crashed.At this point, the ship left the launch pad at Kennedy Space Airport less than a minute.

The ship exploded after 73 seconds left the launch pad.The accident caused the ship's ship to shatter into small pieces, leading to the death of seven astronauts.The accident dealt a severe blow to NASA's space shuttle program, which is the pride of the entire United States.

At 76 seconds, one of the aircraft's rocket boosters is in the air.Fragments from the hull fell below the smoke.The sepia cloud covering Challenger derives from the ship's fuel.

The photo was published after the accident, showing Challenger's fragment fell below.The top arrow points to the debris of the left wing of the ship, the second arrow is the main engine while the last is the hull.

The accident caused a great shock to the American people.President Ronald Reagan (in the middle) with high-ranking officials in a moment watching the shuttle Challenger tragedy on TV.At the time of the tragedy, the shuttle fleet was considered a symbol of America's space conquest technology, far ahead of its biggest rival, the Soviet Union.

The Coast Guard and US Navy were mobilized to salvage debris from the Atlantic crash, where Challenger fell.Efforts to search, rescue and collect debris lasting weeks.They were taken back at the Kennedy Space Center to investigate the cause of the accident.

The bodies of the astronauts were also found and returned to Florida before returning home.

The results of the months-long investigation showed that the cause of the disaster was damaged by rubber seals inside the rocket because the temperature dropped the night before the launch.This incident causes very high pressure high-pressure gas leaks from the rocket.It blew straight into the vessel's external fuel tank, causing a puncture before the explosion.

Every January, NASA celebrates the Challenger tragedy and other space incidents.Sadly, Challenger is not the only space shuttle in distress.On February 1, 2003, space shuttle Columbia exploded during the return to Earth, causing the death of seven astronauts.The accident happened a few days after this photo was taken.