The Space Shuttle Atlantis landed last week after a 13 day mission. One of the co-pilots ignited two small motors for 2.44 minutes to slow Atlantis down from 27,000 kilometers per hour to 250 kilometers per hour (km/h).
This made the Atlantis leave its orbit 340 km above the Earth, and begin its decent. It came down at 9000 meters per minute, landing at 9:07 AM at the Kenedy Space Center.
What kind of training do you think a pilot of a space shuttle needs? What kind of math do you need to understand to be able to make the calculations to get the space shuttle back to Earth?
Read more about the landing here, about the mission just ended (STS-122)here, and about the Atlantis in general here. You can read the blog from the mission here.