Shuttle Landings

The space shuttle lands at a slope 6-7 times steeper than commercial airplanes! Commercial airplanes descend for landing at a "glide slope" of approximately 3 degrees, while the space shuttle glide slope is angled at 20 degrees or more.

The reason for this? Four minutes before touching down, the shuttle is still piloted by computer and moving faster than the speed of sound. As such the shuttle has to perform a manevover known as a "flare" in order to land safely.