2023-10-21 05:38:00
Found “radio waves” in space caused by the phenomenon “A rapid burst of radio waves,” but the latest wave found took 8 billion years to travel to Earth! Astronomers have detected a phenomenon known as “Fast Radio Blast (FRB)” that took 8 billion years to reach Earth This is one of the most mysterious, distant, and powerful explosions ever seen. The definition of an FRB is a millisecond-long burst of intense radio waves of unknown origin. It was first discovered in 2007 and has been around ever since. Hundreds of FRBs have been detected from far-flung locations across the universe. James Webb discovers nanoquartz in the atmosphere of an exoplanet. New images from James Webb may lead to the discovery of an astronomical object. new type The discovery of extraterrestrial life It may be possible in the next few years. The explosion that excited astronomers, dubbed FRB 20220610A, lasted less than 1 millisecond. But during that time, They emit energy equivalent to the energy released by our sun over the course of 30 years. Many FRBs emit ultra-bright radio waves that last only a few milliseconds before disappearing. This makes it difficult to observe such radio bursts. But with a radio telescope It can help astronomers keep track of these rapid phenomena. including the ASKAP radio telescope located in Wajarri Yamachi in Western Australia. Australia’s ASKAP detected the FRB 20220610A explosion in June 2022 and is trying to figure out how. Where does it come from? Dr. Stuart Ryder, astronomer from Macquarie University in Australia One of the researchers who made the discovery said: “Using ASKAP’s radio dish we were able to pinpoint precisely where the explosion came from.” He added: “We then used the European Southern Observatory’s (ESO) Very Large Telescope. in Chile to search for the source galaxy and found it to be older and more distant than any other FRB found to date. It likely resided within a small group of galaxies that joined together.” The team traced the explosion to what appeared to be two or three galaxy clusters in the process of merging to form new stars. This finding is consistent with current theories that suggest that Rapid bursts of radio waves can come from magnetic fields or energetic objects resulting from stellar explosions. Scientists believe that Rapid bursts of radio waves may be a unique method that can be used to Scientists have been able to “weigh” the universe by measuring unidentified matter between galaxies, says Ryan Shannon, a professor at Swinburne University of Technology in Australia. Another team member said: “If we counted the amount of normal matter in the universe, we would find that more than half of what should be present is missing.” He added, “We think that the missing matter is hiding. In the space between galaxies But it might be so hot and diffuse that it cannot be seen using normal techniques.” So far, results from current methods used to estimate the mass of the universe have been inconsistent. shannon said “A rapid burst of radio waves is felt by this ionized material. Even in space that is almost completely empty They can also ‘see’ all electrons. And that allows us to measure how much matter is between galaxies.” The method uses rapid bursts of radio waves to detect this missing matter. This was previously demonstrated by Australian astronomer Jean-Pierre Maggarte, who passed away in 2020. Ryder said: “Jean-Pierre showed that The faster (far) the radio burst is, the more gas will be scattered between galaxies. which we currently call Maggart Relations But the recently discovered bursts of radio waves appear to break this relationship.” In the past, nearly 50 bursts of radio waves have been successfully traced back to their origins. “While we still don’t know what causes these enormous bursts of energy, But the report confirmed that Rapid bursts of radio waves are a common event in the universe. And we will be able to use it to detect intergalactic matter. and understand the structure of the universe,” said Shannon. They hope that future radio telescopes It is currently under construction in South Africa and Australia. It will allow the detection of thousands of more rapid bursts of radio waves over ever longer distances. “You won’t just do this 30 times, you can do this 30,000 more times, creating a new map of the structure of the universe. and use it to answer important questions regarding cosmology,” said Shannon. Compiled from CNN. Photo courtesy of ESO/M. Kornmesser.
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#Radio #waves #space #detected #billion #years #reach #Earth #PPTVHD36
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Space
Unlocking the Mysteries of Metallic Asteroid Psyche: NASA’s Exploration Journey
written by Alexandra Hartman Editor-in-Chief
2023-10-17 02:15:35
Exploration target The largest metallic asteroid in the solar system following the Psyche spacecraft separated from the final rocket stage. The craft spent regarding an hour unfolding its solar panels. The length of the craft is regarding the length of a tennis court. Psyche is also the first NASA solar system probe to be equipped with an electric propulsion system. Made from solar panels, Psyche was originally scheduled to launch into space in October 2022, but NASA delayed plans due to problems with the spacecraft’s software. Therefore, the rocket launch date was postponed to October 5, 2023, and there was a problem with the heat control system in the craft’s cold gas engine. Until it was postponed to October 12, but because of unfavorable weather conditions Therefore, the rocket launch schedule had to be postponed to the next day. The Psyche spacecraft has the goal of exploring. “Asteroid Psyche” (official name: 16 Psyche), which is the largest metallic asteroid in the solar system, measures approximately 278 x 232 x 164 kilometers. Scientists do not know much regarding this asteroid. But the surface of this asteroid was found to be made up mostly of iron and nickel. And scientists speculate that this metallic asteroid was once the “core” of material that would eventually form planets. (protoplanet) Scientists hope that closer study of the asteroid Psyche will provide a better understanding of planet formation and evolution.
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#Psyche #launches #space #headed #metal #asteroid #largest #solar #system
Astronaut Thomas Pesquet: From Dreams to Reality, Exploring Earth from Space
written by Alexandra Hartman Editor-in-Chief
2023-10-16 05:30:28
A dream that very quickly becomes reality, since Thomas Pesquet takes the stages at high speed: aeronautical engineer, airline pilot at Air France… he has only one goal: to pilot and fly. “Seeing the Earth from above, flying, is something that pleases me enormously”, he said. Until the day he learns that the European Space Agency is recruiting astronauts. After a period of hesitation, and 8,413 registered once morest him, he will be one of the six European drivers to finally be entered.
And, following seven years of training, the French astronaut will take off from Baikonur. Direction: the ISS. Not without having made his will beforehand and leaving his bank codes to his wife, just in case. “Unfortunately, you have to think regarding everything. Things go well in most cases, but there are still people who haven’t returned from missions and you have to put your life in order. So, it’s complicated for the loved ones who stay behind and are abandoned. It’s a bit of an abandonment to leave for six months.” he admits.
Once in orbit, he is presented with the spectacle of a lifetime, that of having the Earth at his feet. “Even if we saw it in photos, it’s a bit of a shock. Seeing it in real life is still very special. You also get used to the speed because it’s not just speed. “altitude also means crossing the Atlantic in 10 minutes. It goes very quickly, 28,000 km/h around the Earth, that’s an entire tour in 1h30”, he says. During this mission, Thomas Pesquet will be keen to share his experience with the public, particularly children, via social networks, by posting numerous photos of the planet, taken from the Station’s observation dome. Photos that make him aware of the fragility of our blue planet. “All we have is there. There is nothing else. So, either we use what is there correctly and we manage to do something good so that the situation continues as long as possible, Either it’s going to end badly.”he warns.
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#VIDEO #Childhood #dreams #space.. #Thomas #Pesquet #journey #Sept #Huit
NASA reveals the contents of the sample from the asteroid Bennu
written by Alexandra Hartman Editor-in-Chief
2023-10-12 02:00:20
The asteroid Bennu begins to reveal its secrets. NASA began analyzing the contents of the sample brought back to Earth last month: it contains water and a lot of carbon, crucial elements in the formation of planet Earth.
Published on: 12/10/2023 – 04:00
4 mn
The sample from the asteroid Bennu brought back to Earth by NASA contains water and carbon in large quantities, the American space agency announced Wednesday, October 11. A discovery which should allow us to better understand whether asteroids actually brought to Earth the compounds that allowed the birth of life, as some scientists believe.
“Water and carbon molecules are exactly the kind of matter we wanted to find,” NASA boss Bill Nelson said at an event in Houston, Texas. “These are crucial elements in the formation of our own planet, and they will help us determine the origin of elements that might have led to life,” he added.
The first images of the largest asteroid sample ever brought to Earth have been projected: dust and blackened pieces.
“We chose the right asteroid!”
The Osiris-Rex mission took this sample in 2020 from Bennu, an asteroid 500 meters in diameter then located more than 300 million kilometers from Earth. The capsule containing the precious cargo successfully returned to Earth just over two weeks ago, landing in the American desert.
Since then, the meticulous process of opening the capsule has taken place in a white room at NASA’s Johnson Space Center in Houston. According to initial analyses, this is the richest space sample in carbon ever reported on Earth.
“We chose the right asteroid!” rejoiced Daniel Glavin, scientist at NASA, speaking of “a dream for astrobiologists”. “Carbon is essential for life on Earth, we are all made of carbon,” he explained. By hitting the Earth, asteroids like Bennu might have “seed” our planet.
Water is present on Bennu trapped in what we call hydrated minerals. “We think that’s how water got to Earth,” said Dante Lauretta, the mission’s principal scientist. “The reason why Earth is a habitable world, why we have oceans, lakes, rivers, is because these hydrated minerals…landed on Earth between 4 and 4.5 billion years ago years.”
“Bonus” material
Before the capsule landed, the US space agency estimated it had managed to pick up around 250 grams of material from Bennu – far more than two previous Japanese missions to other asteroids. NASA, for whom such a maneuver was a first, will still have to confirm this estimate. Perhaps within “two weeks”, when NASA teams have managed to apprehend the entire sample, Dante Lauretta told AFP.
Because the operation to open the capsule had some surprises in store. Due to the abundance of material found outside the collection mechanism itself, the main sample has not yet been opened.
“We’re taking our time to methodically process and properly care for each piece of Bennu,” said Eileen Stansbery, chief scientist at the Johnson Space Center.
The happy surprise of this “bonus” material can be explained by an incident that occurred when the sample was taken: just following the operation, NASA realized that the valve in the collection compartment was not able to to reclose. The cargo had managed to be secured by being transferred as planned into the capsule, but because of this leak, scientists expected to find residue outside the compartment.
The material already recovered was entrusted to a rapid analysis team, in order to obtain a first idea of the composition of Bennu, revealed on Wednesday. The sample was screened using a scanning electron microscope, X-ray diffraction, and infrared measurements.
Future generations
Over the next six months, a NASA team will establish “a catalog of samples”, explained Francis McCubbin, deputy head of this team. Scientists from around the world will be able to “request material to study Bennu in their own laboratory,” he stressed.
The majority of the sample will be preserved to be studied by future generations, with new, more efficient instruments and to answer new scientific questions. This is what was done for the lunar rocks brought back during the Apollo program.
Bennu’s analysis might also prove very directly useful in the future. There is a small chance (1 in 2,700 chance) that the asteroid will hit Earth in 2182, a collision that would be catastrophic. Knowing its exact composition might thus help to better understand its trajectory, and perhaps even, if necessary one day, to calculate the impact necessary to deviate it.
With AFP
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#NASA #reveals #contents #sample #asteroid #Bennu