The NASA Fermi Gamma-ray space telescope provided data used to measure all the stars that our universe produced in more than 90 percent of its history, the space agency showed. Scientists working on the project examined the release of gamma radiation from distant galaxies, using it to estimate the rate of star formation. For the first time, researchers measured all the starlight created from the history of the observable universe.
The study comes from the Clemson University College of Science, where astrophysicist Marco Ayelo and doctoral student Vaidehi Palia collaborated with colleagues to analyze the Fermi telescope data. The paper reviewed the history of star formation, covering the 90 percent history of the universe, and found that 4 × 10 ^ 84 particles of visible light were emitted by stars, creating starlight.
Speaking of research, Agello said:
From the data collected by the Fermi telescope, we were able to measure all the amount of starlight ever emitted. It has never been done before. Most of this light is emitted by stars who live in galaxies. So, this allowed us to better understand the process of the evolution of stars and to obtain fascinating information about how the universe created its luminous contents.
Despite the huge number of photons, the Earth still receives most of its light from the Sun due to the enormous size of the Universe. The starlight that reaches Earth from outside our galaxy dims like 60-watt light seen from a distance of more than two miles, leaving us with a dark night sky and small bright stars visible from a distance.
NASA explains in the video above how Fermi works and why its data could help researchers analyze the starlight of the universe. In addition to its research milestones, the study also independently confirms the estimates of past stars, according to the space agency, which were based on deep geodesic missions.
The results will help improve future research on the evolution of stars.