The Daisy telescope in the United States began observing work aimed at drawing a three-dimensional map of the universe with unprecedented accuracy in order to gain a better understanding of its expansion, according to what the managers of this international project announced on Monday.
The spectroscopic instrument Daisy, which was established in the Arizona desert, which is composed of five thousand optical fibers, will focus on the night sky, seeking to monitor and analyze the light of 35 million galaxies in different eras in the history of the universe. This data is supposed to allow scientists to understand the mysterious force called dark energy, which is responsible for accelerating the expansion of the universe, as explained in the statement of the Berkeley Lab of the US Department of Energy, which oversees the program.
And due to the expansion of the universe, galaxies are moving away from each other. The farther away, the more light emitted from the shifts towards the long wavelengths of the observed spectrum, i.e. towards red, according to what the French Atomic Energy Commission participating in this astronomical mission explained. By analyzing the energetic radiation of galaxies, the Daisy telescope will be able to measure this redshift associated with the velocity of distance, and thus provide information about the distance of these galaxies from the Earth.
Researchers will then be able to create a three-dimensional map of the universe with unprecedented details, showing that there are ten times more galaxy spectra than those known today, according to the French government. Cosmologist at the Atomic Energy Commission Christoph Yish explained that the telescope can collect "5,000 spectrums of galaxies every 20 minutes.
The researchers hope that thanks to the detailed distribution of these spectra on the map, they can better understand the nature of dark energy and its effect. This invisible component of the universe acts as a repulsive force that would explain why the universe's expansion accelerated billions of years ago.