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Space Shuttle Challenger Collapse

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In my opinion, I could said that it was very sad to see this video. I have been living in the United States for over 10 years, and I did not know that this tragedy happened before, so I was in shock to see how the Space Shuttle Challenger exploded only 73 seconds liftoff, and killing all seven astronauts onboard. Going to researching about the tragedy, I found out the real cause was a massive, almost explosive, burning of the hydrogen that was streaming from the failed tank bottom, combined with liquid oxygen leaking from a part of the fuel tank known as the interbank. Under severe aerodynamic loads, the space shuttle Challenger broke apart over the Atlantic Ocean one second later, or one minute and 13 seconds after launch. Although in the
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