Fast Fourier Transform Telescopes are special telescopes that use a type of math called the Fast Fourier Transform (FFT) to help astronomers observe stars, planets, and galaxies in space. FFT works by quickly processing large amounts of data from radio waves that come from space. When astronomers get this data from FFT, they can use it to create a better understanding of what's happening in space and learn more about the universe. FFT Telescopes are very helpful for astronomers because they can make studying space much faster.