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Beyond the realm of mind-blowing spaceflight, groundbreaking satellites and stunning moon landings, the European Space Agency is focused on one crucial quest. It's simply to "create the most accurate and complete multidimensional map of the Milky Way." The ambitious endeavor is called Gaia, and for the last several years, ESA has been steadily making progress on the dream. Scientists who're part of the collaboration have collected tons of spectacular data about the more than 1 billion stars throughout our galaxy, recording every juicy detail along the way. And on Monday, the team reached a massive checkpoint for the project. Lucky for us, it also released some remarkable visuals, which encompass the treasure box of cosmic secrets gathered so far. This particular milestone is formally referred to as Gaia data release 3, and importantly, it's one that ESA says is the "most detailed Milky Way survey to date." In this dataset, not only can you see thousands of solar system objects, like asteroids, moons and other celestial marvels within our galaxy, but you can also peruse millions of galaxies and phenomena outside the Milky Way. The position of each asteroid at 12:00 CEST on June 13, 2022, is plotted. Blue represents the inner part of the solar system, where the near-Earth asteroids, Mars crossers and terrestrial planets are. The main belt, between Mars and Jupiter, is green. The two orange "clouds" correspond to the Trojan asteroids of Jupiter. P. Tanga (Observatoire de la Côte d'Azur) When you look at the stats of this survey, it really is jaw-dropping. This new wealth of galactic intelligence includes some 6.6 million quasar candidates with redshift estimates, aka the extremely bright jets that power supermassive black holes, and probably their precise locations. It boasts 4.8 million galaxy candidates, about 813,000 multistar systems, 2.3 million hot stars and so much more. "Gaia is a survey mission. This means that while surveying the entire sky with billions of stars multiple times, Gaia is bound to make discoveries that other more dedicated missions would miss," Timo Prusti, project scientist for Gaia at ESA, said in a statement. The Large and Small Magellanic Clouds appear as bright spots in the lower right corner of the image. The Sagittarius dwarf galaxy is visible as a faint quasi-vertical stripe below the galactic center. ESA/Gaia/DPAC/CU6, D. Katz, N. Leclerc, P. Sartoretti and the CU6 team. A few interstellar surprises According to the team, among the most surprising discoveries of Gaia's data release 3 are strange phenomena called "starquakes." Starquakes are pretty much exactly what they sound like - tiny motions on the surface of a star that can alter its orblike shape. Some of these quakes ESA compares to vibrations we associate with "large-scale tsunamis" on Earth. "Starquakes teach us a lot about stars, notably their internal workings. Gaia is opening a goldmine for 'asteroseismology' of massive stars," Conny Aerts of KU Leuven in Belgium, and a member of the Gaia collaboration, said in a statement. Asteroseismology is to stars what seismology is to Earth, the study of quakes and other such wave propagation. A rundown of the starquake portion of Gaia's new data can be seen below. Another striking revelation was that the Gaia telescope duo - which harnesses a whopping 1-billion-pixel camera - could detect the chemical composition of the stars being studied. This one's a big deal that could revolutionize the field of astronomy. In short, understanding the breakdown of which exact chemicals lace stellar objects could help us decode when they were born, where they were born and what trajectory they followed after they were born. It could reveal a timeline of the universe. And with the new Gaia data, the team found that some stars had heavier elements than others. Heavier elements are often metals, and differentiate themselves from lighter elements because they have a different nuclei structure. This all-sky view shows a sample of the Milky Way stars in Gaia's data release 3. The color indicates the stellar metallicity. Redder stars are richer in metals. ESA/Gaia But the main point here is that lighter elements, from what experts know thus far, are thought to be the only kind present during the Big Bang. In essence, this means Gaia data release 3 offers direct proof of a super diverse combination of stars in our galaxy in terms of both time and place of genesis. "This diversity is extremely important, because it tells us the story of our galaxy's formation," Alejandra Recio-Blanco of the Observatoire de la Côte d'Azur in France, and a member of the Gaia collaboration, said in a statement. "It reveals the processes of migration within our galaxy and accretion from external galaxies." This sky map shows the velocity field of the Milky Way for about 26 million stars. Blue shows the parts of the sky where the average motion of stars is towards us, and red shows the where the average motion is away from us. ESA/Gaia/DPAC/CU6, O. Snaith, D. Katz, P. Sartoretti, N. Leclerc and the CU6 team. Taking this all a step further, viewing the efforts of Gaia kind of reminds us of our place in the universe. Mapping a region far, far vaster than Earth's immediate neighborhood inevitably forces human existence into perspective. As Recio-Blanco puts it, "It also clearly shows that our sun, and we, all belong to an ever changing system, formed thanks to the assembly of stars and gas of different origins." Other remarkable sightings with Gaia include over 800 binary star systems, which refer to two stars orbiting one another, in contrast to our solar system's singular sun, and a new asteroid survey comprising 156 ,000 rocky bodies. This image shows the orbits of the more than 150,000 asteroids -- from the inner parts of the solar system to the Trojan asteroids at the distance of Jupiter. The yellow circle at the center represents the sun. Blue represents the inner part of the solar system, where there are near-Earth asteroids, Mars crossers and terrestrial planets. The main belt, between Mars and Jupiter, is green. Jupiter Trojans are red. P. Tanga (Observatoire de la Côte d'Azur) "We can't wait for the astronomy community to dive into our new data to find out even more about our galaxy and its surroundings than we could've imagined," Prusti said. And with regard to Gaia's own next steps, the team intends to continue toiling away at what will eventually be the pinnacle of lore for our home galaxy, the Milky Way. This image shows an artistic impression of the Milky Way, and on top of that an overlay showing the location and densities of a young star sample from Gaia's data release 3 (in yellow-green). The "you are here" sign points towards the sun. ESA/Kevin Jardine, Stefan Payne-Wardenaar Escort Gersthofen Germany Im happy I now signed upFatima
(29.09.2022 22:23:52)
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A heartbreaking photo shows two unaccompanied brothers aged just two and six intercepted by border agents after they traveled from Guatemala to Texas.
The siblings, who have not been identified, had contact details of US-based relatives scrawled on their t-shirts. Border patrol agents found the children Tuesday morning near La Grulla, Texas with a group of more than a dozen other Guatemalan migrants, including six more children stranded without legal guardians. The two boys had the information of a relative in the United States written on their white shirts, which border patrol agents must rely on to get the children to safety. It is unclear if the youngsters are en route to those relatives, and if agents are able to contact their loved ones. Their plight starkly exposes the ongoing crisis at the southern border, which has seen record numbers of people intercepted while crossing illegally - and conservatives blaming President Biden's policies for encouraging them to attempt the often dangerous trip. A statement from border patrol read: 'Many of the unaccompanied children encountered by Border Patrol are very young and unable to provide names or phone numbers of family members.' 'To locate a (child's) next of kin, agents must rely on information written on articles of clothing or handwritten notes found among their property, adults within the group, and/or the consulate of their home country.' Minors without guardians who arrive at the US southern border are, unlike some illegal migrants, not immediately deported. Two young boys (6 and 2) were found at 6.30am on Tuesday by border patrol agents with the information of their family in the US scribbled on their white t-shirts The children were found with a group of 18 illegal migrants, including six other children in an area near La Grulla, Texas. Border patrol agents in the Rio Grande valley have intercepted more than 70,000 unaccompanied minors this year alone Illegal migration has climbed significantly over the last few years under the Biden administration RELATED ARTICLES Previous 1 Next 2,200 border crossers in ONE day: Shocking footage of Rio... 'We can't wait any longer!': Arizona Governor Doug Ducey... Share this article Share Instead, children are placed in the care of federal agents until such a time that family or other relations of the child can be located in the United States. If no family can be found, unaccompanied children must be sent back to their country of origin. Current policies, according to the , have allowed for more than 140,000 unaccompanied migrant children to arrive at the southern border in 2022 alone. It has also increased the number of illegal migrants who attempt to pose as children in order to avoid deportation. Border patrol said it has apprehended close to 700 child-imposters in the El Paso, Texas area since October. This week, border officials released new figures showing more than 2 million arrests of illegal migrants at the southern border had taken place this fiscal year. That figure is up considerably from the 1.6 million arrests in 2021, and is a more than 400% increase from the 405, 000 arrests made during 2020. sloangroups.mit.edu) Построение обратных ссылок высокого качестваNicolThume
(25.09.2022 07:22:40)
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Предлагаю тоже поглядеть полезные веб-сайты https://baoly.ru/69 Построение обратных ссылок высокого качества https://baoly.ru/q1q1 Размещение текстов, заметок, релизов в социальных закладках https://baoly.ru/4red Создание PBN сайтов на поддоменах Wordpress https://baoly.ru/69 Статьи на сайтах WIKI @good= << пред 214 215 216 217 218 219 220 221 222 223 след >> Написать отзыв |
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05.09.2019 22:30:06
Внимание! Поступил в продажу Трудовой кодекс Республики Беларусь с обзором основных изменений и дополнений, внесенных Законом Республики Беларусь от 18 июля 2019 г. № 219-З
24.08.2017 20:44:01
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24.08.2017 20:38:47
Поступил в продажу Научно-практический комментарий к Закону Республики Беларусь «О борьбе с коррупцией»
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