Hubble Space Telescope
Another space shuttle was soon sent up to repair the space telescope. The repair was not easy. The astronauts had to install some small mirrors to correct the light from the big mirror. The big mirror could still be used. It took five days of space walks. When an astronaut opened one of the doors on Hubble to install a new camera, the door would not close. The astronauts had to think of a creative way to get around the problem. Eventually, Hubble was fixed.