In 2018, researchers at Yale University published a pioneering study of the galaxy NGC 1052-DF2 – the first known galaxy with little or no dark matter. NASA noted galaxy as large as our own Milky Way. Agency Hubble Space Telescope was then used to learn more about this mysterious and unique corner of the universe.
However, researchers at Yale University were still a little skeptical, so they decided to conduct two new studies. The first study ( «Still Missing Dark Matter: KCWI high resolution Stellar Kinematics NGC1052-DF2»), published in In the journal Astrophysical Journal Letters, Confirming the results of the study in 2018, finding that the NGC 1052-DF2 really has little or no dark matter.
The new study confirmed the results of the study in 2018, finding that the stars in the galaxy DF2 are moving much slower than they would move in a galaxy of dark matter.
"The fact that we can see that it's just a completely new & # 39 is that it is so interesting. No one knew that there are galaxies, "said study author Shani Danieli.
The second new study ( «A Second Galaxy Missing Dark Matter in NGC thousand fifty and two Group"), as well as published in the In the journal Astrophysical Journal LettersIt leads to the discovery of other galaxies without dark matter. Scientists called it DF4. Lead author of the study, Yale Professor Pieter van Dokkum, explained in a press release that the opening of another galaxy, devoid of dark matter means that there are likely other similar galaxies in space, which means that it is only a matter of time before they "re-opened other scientists.
"This means that the chances of finding more of these galaxies is now higher than previously thought," he said, adding that he hopes that the results of Yale inspire other scientists around the world to continue to work on solving this cosmic puzzle.
In addition, the value of these new discoveries prompted Yale researchers to seek galaxies devoid of dark matter in a more systematic manner.
Researchers at Yale University now uses an array Dragonfly telephoto – telescope they are intended – to search for similar galaxies. Their aim is to establish whether these galaxies exist in other regions of the universe, they said, and to gain a deeper understanding of what is one of the greatest mystery of our universe.
"We want to find more evidence that helps us understand how the properties of these galaxies to work with our current theories. Our hope is that this will bring us one step forward in the understanding of one of the biggest mysteries in our universe – the nature of dark matter. "
According to NASA, about 68 percent of our universe dark energy, while dark matter makes up about 27 percent of it.