Astronomers have historically resorted to two different methods to understand the universe. Telescopes have traditionally been used to observe galaxies, while scientists have recently tried to simulate them on large computers. Now a theoretical astrophysicist has uncovered the early results of a "third time" – a new method that offers a new idea of galaxy formation and the role of dark matter in it.
Professor Peter Behrozi of Arizona State University is the head of a team using the NASA Pleiades supercomputer to generate millions of simulations of the universe, each following a different theory for galaxy formation.
He told Express.co.uk: "Telescopes can see many galaxies with exquisite detail, but these are just small pictures of their stories. [1
"Simulators introduce all the physics they knew in very large computers, still having problems, because even computers for the next few hundred years will not be enough to simulate a galaxy to its individual compost nents. "and nearby galaxies, gaining fine images of what they look like today.
The scientist uses the metaphor to have pictures of people at all different points in their life history.
The problem that scientists face is combining how galaxies are
He said, "We are guessing at a computer about how fast galaxies grow over time and how many mergers they have, and we generate an entire universe full of galaxies, starting from the first points immediately after the Big blast to this day.
"And then still inside the computer, we pretend to be astronomers, and we observe this universe just as humans did here on earth.
" And we ask, do you also make observations in does the uterus resemble observations of the real universe or do they differ in some way?
"The things we look at, for example, include how many galaxies do we see at different points in the history of the universe?
"How big are they? How many are grouped?
"And by asking the question 'is the universe we generated on the computer similar to the true universe?' "Then we can get an idea of how close we are to the real answer.
"It's like a game of almost how to call yourself getting warmer or cooler in terms of how close you are to what the real universe does. "
The simulations of the University of Arizona team have already achieved some" surprising "results, showing how stellar formation could have been more effective in the early universe.
In the context of most stars in the universe, there are galaxies that stop forming new stars.
Professor Behrosi says: "It's a puzzle for a very long time, because if we watch these galaxies that have stopped forming stars, we find that there's a lot of material and a lot of fuel available to form stars, but galaxies don't use this fuel to form new stars.
"What we have found with the machine of the universe is the most common explanation that it is difficult to cool and condense fuel in small enough regions to form stars, we have found that it is much less likely to be correct because provides a different prediction of how galaxies grow than what
The NASA Universal Machine – the entire floor of a building – took about 5 million CPUs, which means a laptop will need 5 million o'clock.  To turn this into something more familiar as years would be about half a millennium.
The incredible simulations received, as seen in the video above, are only the beginning, Professor Behrozi revealed.
He said, "What we've done with galaxies so far, we want to ultimately include every part of the universe.
" In other words, make a complete, complete movie of the entire universe, with galaxies, black holes , supernova explosions, with everything we can watch in the real universe, add to this virtual universe to really understand what is causing each piece we see. “