The space shuttle Challenger exploded in 1986.
No. The Space Shuttle Challenger exploded on takeoff in 1986. The Discovery is fully intact. It has been retired from service and is on display at the Steven F. Hudvar-Davy center in Virginia.
The space shuttle burned about 11,770 pounds (5,330 kg) of fuel per minute during launch. This fuel was a combination of liquid hydrogen and liquid oxygen.
The first space shuttle to launch in 1987 was the Space Shuttle Challenger on mission STS-61A.
I'm assuming you're talking about Challenger in 1986. Space Shuttle Challenger did not explode. It's right SRB exploded because it's O-ring failed because of the 27 F degree weather on the launch pad. So what could've been done to prevent it? Not launch it.
The last space shuttle launch was originally planned for early 2011, but it was delayed to July 8, 2011. The Space Shuttle Atlantis (STS-135) was the final shuttle mission of NASA's Space Shuttle program before the fleet was retired.