CHICAGO (WLS) -- NASA's Perseverance rover has landed on Mars, and will now search for signs of ancient life on the red planet with the help of parts made in Roscoe, Ill. There was exuberance, joy and relief after Perseverance touched down and, within minutes, was already working. It sent its first image back to Earth, tweeting: "Hello, world. My first look at my forever home." The landing procedure is known as "seven minutes of terror" because it involves slowing down from 12,000 miles an hour to less than 2 miles an hour in only seven minutes. This latest, boldest mission to Mars seeks to unlock the secrets of the universe. Perseverance is now in the Jezero crater, where scientists believe water once flowed more than 3 billion years ago.