The calculation of the light of the entire universe.

The calculation of the light of the entire universe.




The cosmos, how dark the universe can be, there is light beyond the farthest galaxy, everything we see is the product of stars and events that we know or there is light that is produced by phenomena that are now unknown to us.


Now a new investigation gives us an answer because this question has been resolved by NASA's New Horizons spacecraft, since it has made the most precise and direct measurement of the total amount of light produced by the universe. The new Horizons is the spacecraft that visited Pluto and is one of the furthest from Earth. As of August 31, 2024, the ship is about 59.75 astronomical units or about 8962 million kilometers from the sun or just over 8 light hours from us. , but New Horizons has something that makes it very valuable for scientists and that is that unlike the Voyagers that have technology from the 70s, New Horizons was launched in 2006 with more modern equipment, which allows experiments and much more advanced measurements


The universe is not infinite. To this we must add that in the expanding universe the most distant galaxies move away from us more quickly, so their light undergoes a red shift and therefore the intensity of the light of those distant galaxies decreases. What is in the news now and that seems to solve the enigma that has worried astronomers for a long time, is the mystery of the visible light background accumulated throughout the life of the universe, also called cosmic optical background or COB for its acronym in Spanish. English.



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The big question, because if it turns out that if we measure the light of the universe and it is less than that calculated in the theory, a theory that implies that the light we see comes from objects and events known as stars and the environment of black holes, if it turns out That in reality there is less light is that something is wrong in how we understand the entire universe and vice versa, if when measuring that light of the universe it turns out that there is more light, the thing becomes even more extraordinary, because it means that there are cosmic phenomena that we still do not know about, but measuring the Real light of the universe from the earth is very complicated.


"People have tried to measure directly again and again, but in our part of the solar system there is too much sunlight and interplanetary dust that reflects and scatters the light into a fog that blurs the light of the universe," said co-author Tod Lauer. distant”, measuring the light of the universe was therefore a perfect mission for New Horizons, it had suitable instruments and was very far from the Sun and the interplanetary dust is on its way to Interstellar space, perhaps for all eternity. Abrir en Google Traductor • Coment




In 2022, New Horizons made a measurement of that cosmic optical background and the result was that there was much more light than expected, so we would be in the option that there are unknown phenomena that produce light, at that time the alleged culprit was accused. to dark matter, which is the great wild card of modern astronomy, but current research is much more precise, they carefully calibrated the observed light levels and also compared them with the data taken in infrared by the Planck satellite, in the end the The result is that the brightness of the universe coincides with what is expected from the light generated by all the Galaxies that have formed in the universe for more than 12 billion years, therefore, dark matter is innocent and beyond that there is no existence. unknown objects or events that generate light.


In the words of Tod Lauer “we have searched in the space between the Galaxies but there we found darkness and nothing”, more What is beyond the farthest galaxy because it seems that there is only darkness.




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3 comments
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even though I believe the universe is not infinite, I guess it is really so vast

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I really don't know, those are things that humanity will never know with certainty.

greetings.

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