The telescope "Hubble" accidentally discovered the tiny galaxy near the Milky Way
Source:
Modern astronomy has indeed reached a very high technological level. Because of this, we can observe events and phenomena that took place more than 13 billion light-years. We have seen how the encounter of the neutron star; currently trying to determine the exact nature and source of the mysterious fast radio bursts (FRB) and maybe in this year we will see the event horizon of a black hole. The universe is huge and full of mysteries that we have yet to solve it. But a recent discovery proves that some mysteries may be hiding literally under our noses, and their detection may be a common case.
Watching the space telescope "Hubble for a spherical cluster NGC 6752, which is located about 13 thousand light-years from us in the halo of the milky Way, astronomers made an unexpected discovery – a small, dim galaxy located 30 million light years from Earth.
"the Main purpose of our work was to determine the age of one of the globular clusters of the milky Way, remote from us by 13.5 thousand light-years, for which we studied a population of white dwarfs in it. However, looking at the data, we suddenly noticed a compact group of stars. After careful analysis of their brightness and temperature, it became clear that these luminaries do not belong to the cluster NGC 6752, and is located several million light years beyond," the scientists write in the article, the journal Monthly Notices of the Royal Astronomical Society.
The Researchers found that Bedin 1 very tiny, extremely isolated and very ancient galaxy. Its dimensions are only 3,000 light years, 10 times smaller than our milky Way. Thus about 1000 times fainter than our galaxy. Object classified as a dwarf spheroidal galaxy, for which besides the small size are also characteristic of the absence of galactic dust and star formation processes.
Usually dwarf spheroidal galaxies nearby galaxies or clusters (e.g., of the 36 detected galaxies of this type 22 of them are satellites of our milky Way), but Bedin 1 in this respect they're quite different. The nearest to it is galaxy NGC 6744 lies about 2 million light-years.
Using photometric methods, scientists have determined a low content of metals in the galaxy. And since the distribution of heavy elements (e.g. metals) in the Universe occurs with the death of stars, in which these elements are formed, their low concentration in Bedin 1 can say that the galaxy contains a lot of old stars.
Defining the properties of stars Bedin 1, the researchers were able to establish the approximate age of this tiny galaxy. He is 13 billion years. Add another 0.8 billion — get the age of the Universe. Given these characteristics, Bedin 1 can be regarded as the astronomical equivalent of «fossils» from the era of the early Universe.
Not surprising is another fact. Given the distance to the object, its remoteness from other galaxies, its low brightness and its stealth light more bright stars, located in front of him — surprisingly, he was generally discovered, the more "Hubble", which for nearly 30 years.
To Discuss the opening of the astronomers in our .
Recommended
The Americans on the moon: what everyone should know?
the Upcoming cosmonautics day is my favorite holiday. It marks the triumph of the human mind: in just four thousand years Homo Sapiens went from hunter-gatherers to space explorers. 12 April 1961 Soviet cosmonaut Yuri Gagarin became the first man in ...
Why are some galaxies spiral shaped?
you Know what surprised me the most? The fact that we perceive the surrounding world as it is. Animals, plants, the laws of physics and the cosmos are perceived by many people as something so mundane and boring that they invent fairies, ghosts, monst...
Astronomers were able to see the death of another star system
In the cosmic ocean drifts a lot of mysteries about the existence of which we are unaware. One of these was uncovered five years ago, when astronomers have discovered a lonely star at a distance of 570 light years from Earth, the brightness of which ...
Related News
The future of mankind among the planets. Is the key to our survival
the End is inevitable. One day he will. We are waiting for the warming of the planet, acidification of the oceans, the impending mass extinction and the ultimate depletion of resources. One need not look far to understand that hum...
Two private companies will hold its first orbital launches this year
it Seems that stepping up the pace of development of its space program not only that , but also trying to find its niche in the sector of private space services. Two start-UPS from China are going to make their first orbital launc...
In 2015, the British startup OneWeb agreed with the "Roscosmos" on the launch of the 672 satellites for a global broadband access to the Internet. For this purpose it was planned to use a rocket-carriers "Soyuz" with the upper sta...
A long stay in space reduces the efficiency of immune cells in cancer
is a dangerous place. Earlier studies have shown that a long stay in microgravity leads to loss of muscle mass and decrease in bone density can have negative effects on the gastrointestinal tract, and can affect the psyche. Natio...
Scientists predict droughts and fires with the help of orbital satellites
Dry soil without plants could be the first harbinger of the impending drought, but to fully appreciate the risk of its occurrence, it is necessary to pay attention to the amount of groundwater. Fortunately, it is not necessary to ...
In two galaxies did not find dark matter. What's going on?
just as the ripples in a pond indicates that someone has thrown a stone, ran the water meter or jumped a frog, the existence of a mysterious substance — dark matter — is determined by its extensive influence on the space. Astronom...
The astronauts practiced moon walking on the surface of volcanoes
the Mission of "-11" in the course of which man took the first step on the moon, ended 50 years ago. At the moment the astronauts, it is important to prepare for the next missions and to learn to use a new geological instruments a...
The 10 most popular stories of the erroneous detection of extraterrestrial civilizations
are we Alone in the Universe? It seems the question of whether man once to establish contact with any intelligent extraterrestrial civilizations originated long before it was discovered the first system in addition to Solar, and a...
Twins in space: how space travel affects the expression of genes
Scientists got a rare opportunity to see how the conditions on the International space station affected the gene expression by comparing identical astronauts-twins: one of them had been in space for about a year, the other stayed ...
Three ways to fix the Rover opportunity: will it be possible?
Since the launch of the Rover opportunity . Unfortunately, this significant date the unit met in complete silence — after a powerful storm of its solar panels covered with dust and are unable to replenish energy. He was placed in ...
At the Earth's orbit is an inflatable sculpture, but she can't turn around
In December of 2018 booster Falcon 9 was sent into orbit inflatable sculpture of a diamond shape. It was expected that due to the reflection of sunlight will be visible from earth with the naked eye, but the creators still can't g...
#photo | Pits and scars on the surface of the asteroid Ultima Thule
In early January 2019 space probe New Horizons flew past, the most distant object ever studied by humans. Shot with the camera photos are still transmitted to the Ground, and each time their resolution and detail rise. Recently as...
Lunar soil will be a source of water and fuel for space missions
for the last 4.5 billion years the moon surface exposed to solar and cosmic radiation, subsequently, the soil turns into a regolith — gray and dry residual soil. For many amazing the fact that it contains water, which may be colle...
#photo | Part of the prototype Starship rocket company SpaceX has fallen due to strong wind
the Upper part of a large new rocket Starship private aerospace company, SpaceX, established near the village of Boca Chica (South Texas, USA) sustained serious damage in the fall caused by very strong winds. The photographs publi...
#video | this year's First successful launch of the New Shepard Blue Origin
Private aerospace company Blue Origin, owned by billionaire Jeff Bezos, held a successful launch of the New Shepard, and then fit the waste stage and the crew capsule, which will be used for space tourism. This is the first launch...
Astronomers were able to film the meteorite fall on the moon during the Eclipse
Astronomers from around the world often observe events that occur on the moon, especially during lunar Eclipse. However, two rare cosmic events occur at the same time — as, for example, during the lunar Eclipse on January 21...
The Japanese detector is ready to search for gravitational waves
In search of the best detectors of gravitational waves, scientists are looking for the cold. The upcoming KAGRA detector will look for the ripples of space-time, using clever technological tricks: key components will be cooled to ...
The fuel probes are risking to dry up, but the problem is solved
the Space Agency NASA is planning many space operations, the main role in which to play devices that require jet fuel PU-238. It takes a lot of time, so the inventory space Agency of its very few — at last count, there were only 3...
Amazing finds new exoplanet hunter NASA: telescope TESS
it has been almost ten years since the launch of the mission of NASA "Kepler". Since 2009, this spacecraft observed the hundreds of thousands of stars in our own galaxy, measuring the total amount of luminous flux for each of them...
Private aerospace company Stratolaunch Systems abandoned most of their projects
a few months Later since the death of its founder Paul Allen (cofounder of Microsoft) company Stratolaunch Systems has decided to close several projects focused on developing launch systems of spacecraft. It is reported portal Gee...
Comments (0)
This article has no comment, be the first!