The Andromeda galaxy eaten by the sister of our milky Way
Source:
The Andromeda Galaxy, our closest neighbor, it turns out, hides a very dark past. Astronomers from the University of Michigan found that about two billion years ago Andromeda swallowed the sister of our milky way. All so, our galaxy has a sister, and she ate it.
Scientists have long suspected that the Andromeda could eat lots of other smaller galaxies that were located near it. This was noted especially her halo or aura, which is a gaseous atmosphere surrounding the galaxy. However, the researchers could not understand how greedy was she, and how many neighbors during its existence it has absorbed. Using computer simulations, scientists from the University of Michigan found that the outer part of the Andromeda halo largely consists of the balance of a very large galaxy, which she ruthlessly butchered.
"Astronomers studying the local group of galaxies (in her go milky Way, Andromeda and their neighbors) for a long time. For us was a complete surprise news that the milky Way was a twin sister. We were not even aware of its existence," — comments Eric bell, co-author of scientific articles published in the journal Nature Astronomy, describing the discovery.
The Researchers said that the sister of the milky Way, called the M32p, was very massive a galaxy, the size of which constituted 1/3 of Andromeda and the milky Way. The discovery allows scientists if not solve, then at least offer a solution for another interesting puzzle. Near the Andromeda galaxy is more compact galaxy satellite M32. It was opened in 1749, the French astronomer Le Gentil. For a long time scientists could not understand where he could receive the satellite of Andromeda. Now the researchers suggest that a tight compact galaxy M32 is actually the remnants of galaxy M32p – sisters of the milky Way.
"the M32 is a very strange galaxy. It looks like a plain old compact elliptical galaxy, however, a more careful study it turns out that it contains many young stars. This is one of the most compact galaxies in the observable Universe. The other she simply does not" — adds bell.
The Discovery not only adds to our knowledge about the Universe and about how things are going and the galaxy, it also opens our eyes to how "bloodthirsty" is the neighboring Andromeda. In the end, our milky Way is awaiting the same fate as the M32. Approximately 4.7 billion years Andromeda will collide with our galaxy, forming a new megahalem, which scientists have nicknamed Mlekodaj.
Can genes create the perfect diet for you?
Diet on genotype can be a way out for many, but it still has a lot of questions Don't know what to do to lose weight? DNA tests promise to help you with this. They will be able to develop the most individual diet, because for this they will use the m...
How many extraterrestrial civilizations can exist nearby?
If aliens exist, why don't we "hear" them? In the 12th episode of Cosmos, which aired on December 14, 1980, co-author and host Carl Sagan introduced viewers to the same equation of astronomer Frank Drake. Using it, he calculated the potential number ...
Why does the most poisonous plant in the world cause severe pain?
The pain caused to humans by the Gimpi-gympie plant can drive him crazy Many people consider Australia a very dangerous place full of poisonous creatures. And this is a perfectly correct idea, because this continent literally wants to kill everyone w...
Artificial intelligence has learned to identify birds by their singing
the bird Population is rapidly declining due to deforestation, agriculture and climate change. Scientists are tracking the types, recording their screams, but even the best computer cannot reliably distinguish the signals of some ...
Why no one understands how quickly to develop artificial intelligence?
Now many of us are familiar with Moore's law, the famous principle, according to which the development of computing power follows an exponential curve, doubling in the ratio of price-quality (that is, speed per unit cost) every 18...
Gene editing with the CRISPR/Cas9 can be deadly
a Method of editing DNA CRISPR/Cas9 is considered one of the most important discoveries in modern genetics. However, the large potential of the technology hides a monstrous side effects. Figure it out, scientists were allowed exte...
Scientists have discovered a Jupiter 12 new satellites
Astronomers from the Carnegie institution announced the discovery of 12 new satellites of the gas giant Jupiter. 11 of discovered objects, scientists have attributed to the "normal" outer moons, while one is "strange". The discove...
Human evolution: back to the trees?
Scientists have discovered a new interesting hints in the dorsal columns of the ancient ancestors of the people who indicate that their different subtypes moved differently depending on the environment. Published in American Journ...
To fight cancer cells helps...cancer cells
Scientists know about cancer almost everything. However, to overcome this dangerous disease completely from the experts have not yet been obtained. But if cancer cells are so intent on destroying everything, why not get them to de...
Spectral analysis of the nearest exoplanets has increased the potential of its habitability
last year, the exoplanet is only 11 light years from Earth. And not just another exoplanet, and rocky exoplanets, presumably with great potential for habitability. A new group of researchers conducted a deeper analysis of the open...
Scientists have found a way to remove the body of senescent cells
Aging is an inevitable consequence of our existence. However, since time immemorial, mankind has sought to overcome this process (and ideally, and even immortality). To the ideal we have not yet reached, but to increase life expec...
Editor of genome CRISPR managed to recreate the stage of development of melanoma
Editor of CRISPR genome has been repeatedly proved its effectiveness. And he managed to do it again. Recently a group of researchers from San Francisco were able to identify the sequence of genetic changes that turn the benign nev...
Unfair penalty for a goalkeeper, but to fix it
Penalty – one of those elements of games that make football particularly interesting. So it was that a penalty is completely unfair to the goalie. Statistics show that the chances to reflect a ball in the goalkeeper is almost ther...
The main problem of the future colonists of the moon – dust
Humanity is not only to return to the moon, but in the future even founded a colony. Such ambitious plans require extensive training, especially given the extremely hostile local environment. In an effort to find ways to protect a...
The new packaging will allow a second to identify spoiled food
How to determine the quality of the product? Color? Smell? Of course, but many disease-causing microorganisms and the quality of the product, do not always cause visible to the naked eye changes. In this case, it will help only by...
Study: which brands indicate a fat wallet
If you have an iPhone, then you earn a lot of money. To such conclusion the National Bureau of economic research at the University of Chicago. Report prepared by Marianne Bertrand and Emir Kamenica. They believe that any one brand...
Study: walnuts improve fertility in men
Eating nuts "significantly" increases the number and improves the health of sperm in young males, the study found. The findings "support a beneficial role of chronic consumption of tree nuts to improve sperm quality," say the rese...
In March, died last male Northern white Rhino, leaving only two females of this subspecies. Not having any way to reproduce naturally, the rhinos went to the edge of extinction back to back. But some scientists want to be involved...
The limit of human longevity achieved? As it is not so!
In 1997 at age 122 years Jeanne calment died. She was the longest-lived person in the history of mankind (at least, among those whose deaths have been documented). But after it there will be others. According to a new study, publi...
Astronomers for the first time directly see the process of the birth of the planet
Astronomers for the first time in the history of the image of the birth of planets from a protoplanetary disc surrounding their home star, an orange dwarf star located about 370 light years from Earth. About the presence of emergi...
Thousands of cryptocurrency projects already dead
Two sites that are actively catalogservlet bad cryptoprocta, Coinopsy and DeadCoins, found that more than 1,000 projects were defeated in 2018. Projects range from just thrown to outright Scam. It is not surprising that institutio...
What can people do for a smartphone today
In recent years, increasingly raised the topic of smartphones. Gambling addiction is already recognized disease, and companies like Apple, Google and Facebook are making efforts to ensure that we can monitor the operation time of ...
Elon Musk and the new study on alien life: we should go to Mars
Elon Musk has long been can not refuse from the idea of colonizing other planets. He collected thousands of employees in SpaceX, which built the ship , able to transport 100 people and 150 tons of cargo to Mars. Today he has even ...
(0)