The James Webb Space Telescope (JWST) is a large, space-based observatory that is set to launch in 2021. It is designed to be the successor to the Hubble Space Telescope and will provide unparalleled capabilities for observing the universe in infrared wavelengths. The JWST will have a much larger mirror than Hubble, allowing it to collect more light and image fainter and more distant objects. It will also have instruments that are optimized for studying a wide range of astronomical phenomena, from the formation of galaxies to the search for Earth-like planets around other stars. The JWST is expected to revolutionize our understanding of the universe and make important contributions to many areas of astrophysics.