Introduction – For astrophysics mission, NASA makes use of space telescope that helps in providing the largest picture of the universe with the same clarity and depth just like the Hubble space telescope. In the middle of the 2020’s, it will launch with the wide field infrared survey telescope that enables the functioning of wide eye of the Hubble. It is very sensitive like the Hubble cameras that help in the building of an image in the sky area up to 100 times larger. Or in other words, it is a single WFIRST image that can hold equal details of 100 pictures from Hubble.
Importance – The wide field of view of the mission will allow the generation of big pictures of the universe that will help the astronomers that will be explored with some of the great mysteries of the cosmos. It includes the expansion of universe that is gradually increasing. It will explain the speed of dark energy. It is an unexplained pressure that makes use of total content of the cosmos that is changing over the history of universe. The apparent cosmic acceleration points that helps in the breaking down of various theories of relativity across large swaths of the universe.
Usage – WFIRST uses powerful mirror with wide field instrument that is structured and distributed throughout the cosmos. It also helps in the measurement of universe expansion over time. In this process, this mission studies various galaxies across cosmic. For the understanding of method of universe evolvement from hot and uniform gas into planets, stars and people that studies the beginning of the process by looking into the early days of the universe.
Strategies – It uses multiple observational strategies that include surveys specially of exploding stars that is known as supernovae and galaxy clusters with the mapping of distribution of galaxies in three dimensions. It will also measure the distance and the brightness of supernovae that provides the first evidence to create the presence of dark energy. These studies can be extended with WFIRST to greater distances that will measure the influence created by dark energy that is increasing over time.
Conclusion – It will measure short distances to galaxy clusters that helps in the mapping of method of its growth. The main focus of this is the distance to millions and billions of galaxies that measures the method of light that is becoming redder at greater distances. It is a special kind of phenomenon which is known as redshift. The farther off a galaxy is, the light will appear brighter whenever we will see it. Identification and measuring 3-d positions will allow the astronomers in the measuring of method of distribution that has changed over time and provides another measure based on the method of effects created by dark energy on the cosmos.