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Astronomers use ‘Galactic VAR’ to rewind star destruction

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Astronomers use 'Galactic VAR' to rewind star destruction

NASA/ESA/STScI

CHP 0519

A team of astronomers found clues while studying the remnants of a supernova in a nearby galaxy, allowing them to “rewind” the destruction of the star.

We are talking about the remnants of the explosion of a white dwarf. CHP 0519, located in the Large Magellanic Cloud, a small galaxy 160,000 light-years from Earth.

Having reached critical mass, the star was subjected to a thermonuclear explosion and was destroyed. Tracing the chronology of a star’s death is sometimes a difficult task, but astronomers at the Chandra Observatory managed to do it using a kind of “galactic video judge”.

Astronomers combined data from Chandra and Hubble with data from the Spitzer space telescope to determine how long ago the star exploded in SNR 0519 and learn about the environment in which the supernova occurred.

according to communiqué observatory, these data give scientists the opportunity “rewind” stellar evolution movie what has happened since then and find out when it started.

The scientists measured the speed of the material in the shock wave of the explosion, which reached 9 million kilometers per hour. The light from the explosion reached Earth about 670 years ago, probably during the Hundred Years War between England and France.

However, it is likely that the material has slowed down since the initial explosion and that the explosion is more recent.

Astronomers have found that the brightest regions of the released image are where the slower moving material is located, and the X-rays are not associated with the faster moving material.

The results show that part shock wave collided with dense gas around remnants of a star, causing it to move more slowly. Astronomers can now use additional observations to more accurately determine when the star died.

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The results were published last August in a scientific journal Astrophysical journal.

ZAP //

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Relive or remake history with The Great War: Western Front

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Relive or remake history with The Great War: Western Front

The First World War, unfortunately, was one of the most remarkable events of the 20th century, and in many ways helped to change planet Earth on a global scale.

But… what if things had turned out differently? Come and discover The Great War: Western Front, the game that allows us to rediscover the First World War or even rewrite it.

American studio Petroglyph is working on its next game, The Great War: Western Front, which will be released early next year for PC.

The Great War: Western Front invites players to take part in the First World War at the heart of the Western Front and thus rediscover or rewrite the history of this conflict.

Players will wear the livery of the theater commander (providing the most appropriate strategy with high-level analysis) and the livery of the commander of operations (ensuring its use in the field). In other words, this is a game that, on the one hand, allows you to create more global tactics (in turn), and on the other hand, allows players to apply these strategies on the ground and in full combat (in real time). ).

As you would expect, players can control either the allied forces or the forces of the Central Empires (Germany and the Austro-Hungarian Empire).

According to Petroglyph Studios, The Great War: Western Front faithfully reproduces trench warfare, which was extremely common at the time. In fact, those responsible go further, pointing out that this is the most realistic simulation of this type of combat ever made in a video game.

Each vantage point offers its inhabitants unique mechanics that allow them to gain an advantage over their enemies, whether they are defending or attacking.

Players will have to think strategically at every point in the game, carefully distributing resources throughout their territory, choosing wisely which points to fortify, in a conflict that has been won inch by inch.

The game will also have an evolution component that allows the use of other weapons such as poison gas attacks or more powerful armored vehicles through the discovery of new attacks and technologies.

The battles take place in a persistent environment, meaning that the battlefields retain the scars of battle as players go through and through the same places again. On the other hand, atmospheric conditions, which will be dynamic, also offer a greater variety of problems and obstacles for the advance of troops.


The Great War: Western Front will release in 2023 on PC via Steam and Epic Games.

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Space pollution: How Mars accumulates more than 7 tons of debris on its surface

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Poluição espacial: Como Marte acumula mais de 7 toneladas de lixo em sua superfície

The man didn’t even step on the ground. Marchbut has already polluted the neighboring planet with more than 7 tons trash left on its surface. The warning was given in an article signed by Kagri Kilic, a PhD researcher at the University of Virginia, USA. He made a calculation from the mass of everything that had already been sent from Earth in the Martian missions, coming to the result by subtracting from the total weight of the equipment that is still in operation.

An image of NASA’s Opportunity rover, which is currently stranded on Mars.

See also: “Mysterious door” in the photo of Mars received a scientific explanation

According to an article by Kilich published on the website Talk, the sum of all the equipment already sent to Mars reaches a mass of 9.97 tons. Currently operating devices weigh 2.86 tons. Subtracting this weight, he received 7,119 tons of garbage left by us on a neighboring planet. “You debris on Mars have three causes: discarded equipment, inactive devices and spacecraft that collided with the earth during landing, ”explains the researcher.

On Mars found a protective shield like debris from landing on the planet

On Mars found a protective shield like debris from landing on the planet

Did you see that? 9-year-old Brazilian created a space debris collector and won an award in Europe

The chronology of the study dates back to 1971, when the then Soviet Union sent the Mars 2 probe, which was destroyed in the process of landing, leaving the first debris on the Martian soil. Since then, 14 more missions have delivered 18 objects to the planet. It is not uncommon for current equipment to detect these remnants on expeditions, as happened recently with an astromobile. perseverance discovering a thermal blanket left over from his own landing.

Mysterious object recently discovered "perseverance" type of network or cable

The mysterious object recently found by Perseverance is a type of network or cable.

See what: NASA pays $1 million for ideas on how to feed astronauts on Mars

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In addition to the wreckage, currently in planetary surface: The Mars Pathfinder probe and the Sojourner rover, for example, landed on Mars in July 1997, but lost contact with Earth two months later. Also on the planet were “sent” the Soviet probes “Mars-3” and “Mars-6”, the spacecraft “Viking-1” and “Viking-2” and the probes “Phoenix”, “Spirit” and “Opportunity” of NASA, the apparatus ” Sojourner” also by the American agency and the British spacecraft “Beagle”. , two.

rover lander "Spirit"photographed by the technique itself in 2004

Lander of the Spirit rover, photographed by the equipment itself in 2004.

To learn more: Astrocolonialism: how big tech is stealing humanity’s sky

The biggest concern with trash on Mars remains a possible threat that it poses to current and future missions, as well as the possible contamination of samples collected on the planet. engineers NASA they are currently investigating whether the Perseverance robot can be damaged by debris, but suggest that the risk is low. “The real reason debris on Mars is important is its place in history. The ships and their parts are the first milestones in the exploration of the planets by man,” writes Kilic. “Most of them are intact, and perhaps they can be considered more historical relics than garbage,” he concludes.

wheels "Curiosity"for example, leaves small residues of aluminum wherever it is

For example, Curiosity wheels leave small aluminum scraps wherever they go.

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[아하! 우주] China launches ‘two spaceships’ with rocket to explore Jupiter and Uranus: ZUM News

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[서울신문 나우뉴스]

Buyer Data Image (Source: NASA)

China is planning an ambitious “one stone and two birds” project for the outer planets of Jupiter and Uranus, launching a pair of spacecraft simultaneously with a single rocket around 2030.

The mission is called Tianyuan 4, and the two largest Jupiter-bound probes will be sent to Uranus, while a smaller spacecraft will be sent to explore Uranus.

Launched simultaneously by Changjun 5 rockets, the pair use two flybys of Venus and two flybys of Earth to place the spacecraft on an outer solar system trajectory before determining their intended paths.

China previously said it was in the planning stages of Jupiter exploration, but at the 2022 International Space Conference in Paris on Sept. 21, Wang Qiong of the China National Aeronautics and Space Administration (CNSA) announced the establishment of a new Center for Space Technology and Lunar Exploration. . Details.

The main spacecraft will be designed to study the Jupiter system and eventually enter orbit around Callisto to explore its more distant Galilean moons.

According to the CNSA statement, a small spacecraft weighing a few hundred kilograms will make a long journey to Uranus, indicating that the spacecraft could fly close to the asteroid on its way away from the Sun.

“Scientific targets are still being explored,” CNSA’s Wang Qiong said after the presentation. Previous announcements have focused on extensive surveys of Callisto as the main target, which could reveal much about the history of the Moon and Jupiter, or irregular satellite surveys of Jupiter, which could provide insight into the solar system’s early days.

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CNSA had previously considered landers as part of the Carilsto-focused mission profile, but Wang says the latest concept does not include landers other than orbital ones.

Meanwhile, China launched its first independent interplanetary mission in 2020, sending the Tianyuan-1 orbiter and Colony spacecraft to Mars.

Tienwon 2 will launch around 2025 and land on Kamo’oalewa, an underground satellite orbiting the Sun in Earth orbit, collecting samples and returning around 2026.

Tianyuan 3 will be a complex double-launched modular Mars return mission, expected to deliver the first samples collected from Mars to Earth as early as 2028.

Wang also added that with the plan to build an international lunar research base in the 2030s, “the goal is to promote the use of manpower, create a new kind of international cooperation in space exploration, and promote the peaceful use of spacecraft.” space”.

Or columnist Kwangsik Lee Science [email protected]

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