And researchers who study the modern universe know how much ordinary, baryonic matter humans can see with telescopes.
Researchers at the University of Colorado Boulder have helped to find the last reservoir of ordinary matter hiding in the universe.
This is one giant step for astrophysicists.
Quasar is a massive galaxy with a supermassive black hole at its center.
Researchers have discovered what could be the last of missing matter in the universe-offering an explanation to the long-time puzzle termed as the "missing baryon problem" by astrophysicists. Extrapolating the entire universe, baryons accounted for at least 30% of the ordinary matter.
The team said that finding the missing baryons is important to finally put together the puzzles about how the universe began.
"We found the missing baryons", Michael Shull.. In the 1990s, astrophysicists made predictions of the way in which many hydrogen and helium atoms had been formulated in the Big Bang.
For instance, Jessica Rosenberg, an associate professor at George Mason University in Virginia, noted that, although "tantalizing", these results are "a bit of a leap", since it's hard to imagine that all the missing matter in the universe can be accounted for by a single source of light with two absorptions found in a distant quasar. Of the rest, only about 10 percent lies in all the galaxies in the universe, including all the countless stars and planets within them, as well as the interstellar gas that stars form from. "It's basically a really bright lighthouse out in space", stated Shull.
Researchers hypothesized the missing matter existed in a web-like pattern called the warm-hot intergalactic medium. "This intergalactic medium contains filaments of gas at temperatures from a few thousand degrees to a few million degrees". He and Danforth, a co-author on the new research, will also investigate how the oxygen gas landed in these enormous pockets of space.
By studying the behavior of the quasar beams as they passed through intergalactic space, scientists got a sense of where these missing baryons might be located.
The team analyzed the light of this particular quasar with the X-ray Multi-Mirror Mission (XMM-Newton) satellite of the European Space Agency (ESA). Quasars are some of the brightest objects in the universe and can outshine all of the stars in their host galaxies, making them visible even from distances of billions of light years.
However, the researchers still need to confirm their findings by analyzing the radiation from different quasars.
The new study also includes authors from the SRON Netherlands Institute for Space Research; Instituto de Astronomia Universidad Nacional Autonoma de Mexico; University of Trieste; INAF-Osservatorio Astronomico di Trieste; Istituto Nazionale di Fisica Nucleare; University of RomaTre; Princeton University; INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna; Columbus State Community College; Ohio State University, Instituto Nacional de Astrofísica; Columbia University; INAF-Istituto di Astrofisica e Planetologia Spaziali; Leiden Observatory and Instituto de Astrofísica de La Plata.