Fast Fourier Transform (FFT) is a general term for efficient and fast calculation of discrete Fourier Transform (DFT) by computer. Fast Fourier transform was proposed by J.W. Cooley and T.W. Tuji in 1965. By using this algorithm, the number of multiplications required by computer to calculate discrete Fourier transform can be greatly reduced, especially the more sampling points n of the transform, the more significant the saving of FFT algorithm is.

Cosmology is the study of the universe. It also studies the position of human beings in the universe. Although the word cosmology appeared only recently, people have studied the universe for a long time, and Ptolemy in ancient Greece is the earliest known pioneer of cosmology. Modern cosmology is synonymous with mathematics and physics. It has long abandoned the concepts of religion and pure philosophy, and studied the deep principles of the universe with the help of large-scale physical experiments and super telescopes, relying on modern astronomy and mathematics.

The James Webb Space Telescope built by the National Aeronautics and Space Administration (NASA) in cooperation with international partners will be able to observe space for about 200 million years. Starting from materialism, Marxist philosophy holds that all problems of cosmology are determined by philosophical world outlook, and there is no single world outlook. The difference between cosmology and ontology is that cosmology explores the real things in this world, while ontology explores the relationships and principles that are effective in any world.

Modern cosmology is synonymous with mathematics and physics. It has long abandoned the concepts of religion and pure philosophy, and studied the deep principles of the universe with the help of large-scale physical experiments and super telescopes, relying on modern astronomy and mathematics. For example, the James Webb Space Telescope built by the National Aeronautics and Space Administration (NASA) in cooperation with international partners will be able to observe the space scene for about 200 million years. For example, the $600 million Kepler mission was launched in March 2009, becoming the first spacecraft dedicated to searching for terrestrial planets outside our solar system. The James Webb Space Telescope built by the National Aeronautics and Space Administration (NASA) in cooperation with international partners will be able to observe space for about 200 million years. In order to study cosmology, NASA needs a more powerful observation equipment to return itself to the beginning of the universe. This observation equipment is the James Webb Space Telescope, which will be launched in 20 18.