"Seven minutes of terror" is what NASA called the intense sequence of events that Curiosity had to execute in order to safely land on Mars, while going from 13,000 miles an hour to zero. The Mars Science Laboratory spacecraft carrying the rover had to be guided to its landing spot, the Gale Crater, withstanding 1,600 degrees of heat or risking destruction. A supersonic parachute, the largest and strongest built to date, slowed down the landing. Finally, the rover, guided by rockets, used its cameras to touch down in the right spot on Mars. NASA relived the moment of excitement in a short video posted for Curiosity's anniversary.