If you're actually a fan of the big world and you can not say anything about the world, Clement University's astronomer Marco Ajello is a great thing to you: 4 x 10 ^ 84.
In the history of the universe, this is the total number of photons that have successfully escaped from dust and dust around the spacecraft. You'd expect that value to be bigger. And of course, all the complexity in it. (For comparison, there are a few dimensions in recent estimates that there are atoms in the universe.)
But that figure can be counted by a good way for Ajay and his team. The theory behind the star formation rates of the cosmic history revolves around that research. All the stars use information that is trapped in the constellation – that is, known as a formal external light. [Gamma-Ray Universe: Photos by NASA’s Fermi Space Telescope]
Unusual background light is part of the next infrared, optical, and ultraviolet radiation that produces stars out of space instead of colliding with the dust of the galaxy. "It's basically an all-star star," Ajay told Space Dots. "The light of stars that can escape into space is in this background."
But proportional background lighting is difficult to measure because it is brighter throughout the universe. So Ajay and his co-sponsors tried to use the quality of the blazes – covering a galaxy's giant black hole. It's very low in depiction of high-energy objects. Our direction. Information about the blazers and high power gamma relay photons with the help of NASA's Fermi Gamma-ray Space Telescope.
The sluggish nature of the blues is: the highest energy light generated by the light-energy particles of the light, such as the photons we take. That collision makes an inappropriate photo into an electron and a positor. It is the high power photographer released by Blazer. If Blazar is focused on studies, it's only a bad thing, "said astronomer Manasweta Joshi, at Boston University, told Space Dots," but you can use something like this. "
Communication between blazer photons and ultrasonic background light photons will only sound at a fixed energy source. Scientists can analyze how much of the energy generated in low energy conditions can be produced to produce this high energy level. Then, the differences can be measured, and it also disappeared during the collision. From there, on the other side of the impact, the easy-to-be-burned house, to measure the intensity of the background.
By studying a lot of blazers – 739, accurately – from the Earth and at different distances, over time the background changes in the background light on the extergalactor will be able to clarify. "By measuring how the whole star is measured by the universe, you can actually transform a quotient suitable for star formation," said Ajel. "In the history of the universe it is precisely what is being changed." [Messier’s List: Hubble Telescope’s Stunning Views of Deep-Sky Objects]
Concerns about the history of the Cosmic Star Group are now being used, "Joshi said, adding that this was a time for the scientists to solve the problem, but so far they had to depend on some initial assumptions. [with previous estimates] It's because of your initial mass … It's a guess, it's a guess and it can show uncertainty, "Joshi said.
This different approach, which overrides these initial assumptions, brings conclusions about star formation from time to time. Astronomers are reluctant. Not only does it not only limit the conclusions, but also help scientists to move forward with the first assumptions of access to the old methods of estimating star formation.
So when was the best time for stars to be born? About 10 billion years ago. The evidence is in their asterisk.
Research has been described in a paper published in Science on November 29.