Scientists have called the amount of light of all the stars that have ever existed

The international team of astronomers was able to measure the total amount of stellar light emitted over the 13.7 billion years of the history of the universe. The results are published in Sciénce magazine.

"This has never been done before," said Marco Ayello, an astrophysicist at Kensington College of Science in South Carolina and lead author of the article.

In general, according to astronomers, the stars irradiated 4 stars in 1084- degree of photons (the photon was the smallest unit of light). Or in other words: 4,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 OCTOBER: SIX,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 Astronomers have calculated their calculations with the help of extragalactic measurements The Background Light (EBL), a cosmic fog of radiation that has accumulated since the stars first covered the vast and dark space.

"Today, we are sitting in this sea of ​​light," said Kary Helgazon of the University of Iceland in Reykjavik and co-author of the article.

Since it was concealed by light from nearby stars, EBL proved to be difficult to calculate.

Recent NASA space telescope observations over the past nine years have used the light of blacksmith and supermassive black holes emitting powerful gamma-ray jets as beacons for illuminating cosmic fog.

"They are so brilliant, which can shine almost throughout the observer universe," said Helgazon.

In general, the team seized the signals of 739 blacksmiths – some relatively close and others extremely distant, whose light radiated in the ancient world and billions of people. KIV going towards the Earth.

Gamma rays that pass through the starlight fog, have a high probability of absorption. Thus, by taking blazars at different distances from the Earth and determining what part of their radiation was lost along that path, it was possible to determine the exact number of stellar light at different periods of time.

"We measured the total amount of stellar light for each era." – 1 billion years ago, 2 billion years ago, 6 billion years ago just before star formation, "said Wadexhi Palia, another co-author of the article.

"It's really a division that gives us the opportunity to recover the background light as a function of time," – said Helgazon.

is a complication is the fact that if starlight accumulates over time, the fog of space grows at the same time as the expansion of the universe and expands the space itself -even. In general, the fog is always denser. These phenomena and other complex phenomena were taken into account when using a computer model.

Measurements show that star formation peaked about 11 billion years ago and that it has since declined. Each year, about seven new stars are created in our galaxy Milky Way.

These data also give a new insight into the first billion years of the history of the universe – a day that has not been explored by modern satellites.

"Our measurements let us look inward," said Ajello. "Maybe, once we've found a way back to the Big Bang. This is our ultimate goal. "