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Astronomers: Another Galaxy Curves the Milky Way Ahead of a Collision

Why is the galaxy curved? Scientists received an unexpected answer: because it is affected by another star system, which will soon collide with ours.

Details are set out in a scientific article published in the journal Nature Astronomy.

The disk of the Milky Way is curved: one of its edges is raised, and the other is lowered. The first indications of this fact appeared in the late 1950s, and recently it has finally been confirmed.

Where does this bend come from? Experts have offered various versions. According to one of them, the magnetic field of the Galaxy is to blame. Another hypothesis suggests that the cloud of dark matter into which the Milky Way is immersed has an asymmetric shape. Therefore, scientists say, the gravity of dark matter bends the disk of the Galaxy.

The new study relies on an unprecedentedly accurate measurement of the shape of the Milky Way. It was carried out thanks to the Gaia orbital telescope, according to which the richest star catalog in history has been compiled. The tool helped determine the coordinates and speeds of more than a billion stars. This is not so much compared to the total number of luminaries in the Galaxy (hundreds of billions), but much more than was previously studied.

Selecting 12 million giant stars located in the outer regions of the disk, the authors tracked the change in the shape of the latter.

Thanks to new data, astronomers have found that bending is not static. He moves through the galaxy. The previously curved parts of the disk are straightened, while the adjacent ones are bent.

“Based on the speed obtained, the bend will complete one revolution around the center of the Milky Way in 600-700 million years,” says Eloisa Poggio from the Turin Astrophysical Observatory.

Image result for Illustration by Stefan Payne-Wardenaar; NASA / JPL-Caltech; ESA

Milky Way Form. Illustration by Stefan Payne-Wardenaar; NASA / JPL-Caltech; ESA

For comparison: the Sun makes a complete revolution around the center of the Galaxy in 220 million years, that is, about three times faster. But astronomers did not expect such speeds from the bend of the Galaxy.

This is much faster than the shape of the Milky Way could change due to the magnetic field or the attraction of dark matter. Therefore, the authors have another hypothesis.

They believe that the matter is the gravity of a small galaxy, which is located near ours and in the near future by astronomical standards, is likely to crash into it. Which of the star systems surrounding the Milky Way is engaged in such cosmic hooliganism is not yet clear. Perhaps we are talking about one of its closest satellites – a dwarf elliptical galaxy in Sagittarius.

dwarf galaxy

The location of the dwarf galaxy in Sagittarius relative to the Milky Way. Illustration ESA / Gaia / DPAC, CC BY-SA 3.0 IGO.

The authors emphasize that the movement of the bend does not affect life on Earth.

“The sun is 26 thousand light-years away from the center of the galaxy, where the strain amplitude is very small,” Poggio explains. “Our measurements mainly related to the outer parts of the galactic disk, 52 thousand light-years from the center of the galaxy and beyond.”



A “Meteorite” falls in Nigeria destroying more than 100 houses and leaving a huge crater

On the morning of Saturday 28 March 2020, a large meteorite crashed in Akure (Nigeria), destroying more than 100 houses and leaving a 21-meter crater on the ground. Experts from the Awbaowo University of Obafemi (Nigeria) denied the local police who initially claimed that a bomb explosion had created the 21-meter crater.

According to Nigerian sources, the explosion destroyed the Akure-OVO road and seriously damaged dozens of houses, from 50 to 100, as well as schools and churches.

It is interesting that initially the authorities denied the meteorite’s fall and claimed that the cause for the explosion was a truck with explosives, which was transported to a neighboring state. Ondo State Governor Rotimi Akeredolu said the blast was an accident.

Then the version changed and the truck was no longer just transporting explosives, but it was supposedly a terrorist act.

Now, a team of experts and scientists came to the conclusion that everything that happened was a fall of a large meteorite.

The blast that shook Akure, the state capital of Ondo, on Saturday, was caused by a giant cosmic rock, a team of experts concluded.

Led by Adepelumi Adekunle, a professor of geophysics and seismic engineering at Obafemi Avolovo University, the team said that the meteorite entered the atmosphere of our planet at a “43 degree angle”.

Adepelumi Adekunle’s report reads:

“My research team conducted a detailed analysis of the impact site. A round impact crater was discovered with a diameter of 21 m and a depth of 7.8 m, which indicates a natural phenomenon.

– It was found that water is oozing from the edges of the crater. Preliminary field studies of vibration, noise, seismicity, analysis of water, radioactivity, rocks and soil were carried out.

“Our findings suggest that the impact of the explosion covers a radius of 1 km from the vicinity of the crater.” No signs of fire or burning were found in the vicinity. “

“No signs of radioactive radiation were found within the crater and in the immediate vicinity of it. Field data indicate that a meteorite from the asteroid belt was moving at high speed from space, and fell at an angle of 43 degrees in the southwestern part of the country “

A local source said that after the incident, no one was missing and no one was killed. The most interesting thing in the report is the mention that “unusual stones and strange metal objects” were found inside the crater. So what actually fell in Nigeria – a meteorite or a UFO?

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Something strange is happening with the interstellar comet 2I / Borisov

When astronomers see something in the Universe that at first glance seems to be one of a kind, this will certainly cause great excitement and attention.

This mysterious guest from the depths of space first attracted the attention of celestial observers at the end of August 2019, when it was officially discovered sweeping through the solar system along a trajectory indicating interstellar origin.

After analyzing the object, astronomers identified it as a comet called Comet 21 / Borisov, which is the first identified comet and the second observable interstellar alien after the infamous Oumuamua, who arrived here from another star.

NASA claims that they do not know where and when the comet began to move towards our Sun. Gravity of the Sun slightly deflects its trajectory, but cannot capture it due to the shape of the orbit and its high speed of about 160,934 km / h.

Hubble showed that the comet’s heart, a loose accumulation of ice and dust particles, was probably no more than 975 meters across, about the length of nine football fields.

Now, this month, astronomers have discovered that something strange is happening by checking the object.

In the next video, nemesis maturity explains what happens to this mysterious interstellar guest.

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Hundreds of exoplanets with two suns discovered

Until recently, in search of inhabited exoplanets, binary star systems were completely undeservedly ignored. Exoplanets with two suns have long become familiar places where the events of science fiction novels and films are unfolding.

One of the most striking and well-known examples of this is the desert planet Tatooine, the birthplace of Anakin and Luke Skywalker in the famous Star Wars movie saga. But only in 2011, NASA scientists using the Kepler space telescope were able to provide clear evidence that such exoplanets that revolve around two stars at once really exist. The planet discovered then was called Kepler-16b.

Despite the impressive discovery, scientists continued to believe that such planetary systems are extremely rare due to the complex attraction of two suns at once. But this opinion turned out to be completely wrong, writes astrophysicist Paul M. Sutter in an article for This was revealed as a result of a new analysis of millions of stars and the discovery of exoplanets that have been recorded and cataloged by the ESA space telescope since 2013.

In fact, there are only two scenarios in which planets cope with the complex gravitational forces of two stars. If the stars are located very far apart, the planet can rotate around one star – then the other will be visible from the surface of the planet as a brightly shining star in the sky. In another case, both stars are close to each other – then the planet rotates at a safe distance around its double sun, as if it were just one celestial body.
These seemingly unbelievable stellar constellations are likely to occur much more often than might be expected.

Researchers have discovered during their targeted search already 300 exoplanets that could “boast” of double suns. Until now, astronomical science has actually ignored binary stars to search for (inhabited) exoplanets, because scientists considered their occurrence extremely unlikely in principle. In the case of discovered 300 planets, it is most likely a question of constellations, in which binary stars were incorrectly interpreted by the telescope as single stars.

Sutter speaks of decades of scientific confusion and uncertainty: “Since we did not often pay attention to the search for planets in binary solar systems, we had little chance of finding them. We didn’t look for anything like that, therefore we didn’t find it. The researcher believes that the realization that such double suns are very common should definitely be considered when searching for new exoplanets.

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