Thanks to the possibilities of capturing and analyzing light emissions from galaxies, scientists with a Hubble telescope managed to recreate the type of the Universe of 11 billion years ago.
Space telescope Hubble NASA does not need a time machine to look into the distant past. Thanks to the detection function of ultraviolet (UV) of light, Hubble was able to assemble the panoramic image of our universe at the time of its state of 11 billion years ago.
Covering huge intervals of time and space, composite photo includes about 15,000 galaxies, 12,000 of which are in the process of «birth» of young stars. Ultraviolet light shows the cosmic bodies that have formed after a large explosion, which allowed astronomers to track 11 billion years of the evolution of stars.
The collection of light from galaxies allows you to recreate a complex picture of the evolution of the universe and makes it possible to switch the secrets of the past. The amount of time required in order for the light of the galaxy to reach the Earth depends on its remoteness. For example, the light from Andromeda’s galaxy is needed 2.5 million years. However, for more distant galaxies, much more time may be required.
From nearby galaxies, we get a wide range of light. Infrared and ultraviolet are important — they reveal before scientists the opportunity to present the nature of the formation and evolution of cosmic bodies. It is known that the galaxies emit a high percentage of ultraviolet light in the process of forming new stars. The research problem is to capture the ultraviolet light of the atmosphere of the Earth. Fortunately, Hubble Deep UV (HDUV) research program (HDUV) LEGACY SURVEY uses the capabilities of a space telescope that allows you to catch the light over the atmosphere.
The beginning of the study of the capture of light dates back 2014. Identifying galaxies, astronomers study their evolution: the path of development from young star-forming areas that existed shortly after a large explosion, to mature galaxies that we have the opportunity to see today.
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