The James Webb Space Telescope (JWST) is a large, infrared-optimized space telescope to launch in 2021. 


It is the successor to the Hubble Space Telescope and be the most powerful telescope ever put into space.


The JWST's primary mirror is made up of 18 hexagonal mirror segments, each measuring 1.32 meters (4.3 feet) across. 


The mirror is 6.5 meters (21.3 feet) in diameter, making it more than 100 times more powerful than the Hubble Space Telescope. 


The telescope is also equipped with a suite of advanced scientific instruments, including cameras and spectrometers, which will be used to study a wide range of astronomical phenomena, including the formation of galaxies, stars, and planetary systems, as well as the properties of exoplanets and the early universe.


One of the main goals of the JWST is to study the early universe and the formation of galaxies. 


The telescope's ability to observe in the infrared will allow it to look back in time to when the universe was only a few hundred million years old. 


This will provide scientists with an unprecedented view of how galaxies formed and evolved in the early universe.


The JWST will also be used to study the properties of exoplanets, including their atmospheres and potential for habitability. 


The telescope's ability to detect and study the light from these distant worlds will provide scientists with important information about the composition and conditions on these planets.


The James Webb Space Telescope is a powerful observatory that will enable scientists to study a wide range of astronomical phenomena. and is expected to provide us with a wealth of new information about the universe and its origins.