A tiny hole in Greenland reveals how creatures survived climate extremes 210 million years ago. world News

A tiny hole in Greenland reveals how creatures survived climate extremes 210 million years ago

Located in the Fleming Fjord Formation of eastern Greenland, recently identified 210-million-year-old lungfish burrows provide valuable information about the fluctuating nature of the Late Triassic climate in ancient Greenland. Fossil burrows indicate that lungfish had a strategy of surviving seasonal drought in Late Triassic Greenland by digging into the soil through a biological process called ‘aestivation’, waiting for the environment to become hospitable again.This research, published on ResearchGate, expands our understanding (or lack thereof) of the Norian-Rhaetian transitional periods, revealing that environmental stress – not lush ecosystems – defined these ecosystems during the Late Triassic period. Geologists and paleontologists are reconstructing the ancient world from these ‘holes’ in the rock, where animals retreated to survive beneath the Earth’s surface.

Greenland burrows reveal survival of lungfish 210 million years ago

Researchers discovered ‘trace fossils’ created by lungfish (cylindrical structures) in sedimentary layers deposited in ancient lake valleys as a result of the geological processes of the Fleming Fjord Formation. Unlike body fossils, which record an organism’s form and appearance, these burrows document an organism’s actual behavior, specifically the behavior of burrowing into the substrate to avoid dehydration about 210 million years ago.

210 million year old mystery of Greenland’s fish

The discovery of these burrows provides evidence that Triassic period lungfish were able to enter a stage of dormancy (known as aestivation) as a method of coping with the conditions of their environment. This physiological response enabled the lungfish to survive in the intermittent lake; That is, these fish could survive in a lake that was subject to the drying up of water sources as a result of the Pangean megamonsoonal cycles.

What mudstone burrows tell us about Greenland’s continental drift

According to the book ‘Geological Survey of Denmark and Greenland (GEUS) Bulletin’, the layers in which these burrow holes occur are composed of mudstone and siltstone; They maintained the shape of the cavities from the time the soil was deposited until it hardened. These types of structures are important for researchers to understand how Pangea moved from one place to another and where Greenland was on Earth during this time period.

How Greenland’s tiny holes reshaped Triassic climate models

Furthermore, these ‘small holes’ act as climate proxies to indicate precipitation fluctuations at higher amplitudes. Data published in research at NCBI shows that Triassic high-latitude regions were significantly more thermally elevated than previous estimates. Also, they were drier than current models. This suggests that the high-latitude region was quite different from what current models suggest with respect to past atmospheric and climate conditions.

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‘Center of armament and financing’: Israel targets 3 airports in Iran; plane, helicopter hit

'Center of armament and financing': Israel targets 3 airports in Iran; plane, helicopter hit
Screenshot of video published by IDF

The Israel Defense Forces (IDF) released footage of warplanes flying strikes on airfields and airports in Tehran, in what it described as a “massive overnight airstrike” targeting Iran’s air assets.“Killed: a number of air assets, including aircraft and helicopters, as well as additional military infrastructure at Tehran’s three airports – Bahram, Mehrabad and Azmayesh. Mehrabad airport was used by the IRGC’s Quds Force and served as a central hub for arming and financing the regime’s terrorist proxies in the Middle East,” the Israel Defense Forces (IDF) said in a post on X, of the operation. Sharing a video of fighter planes taking off.According to the IDF, the operation was conducted under the guidance of the IDF’s Military Intelligence and Intelligence Directorate.Mehrabad airport has been attacked “several times”, particularly during Operation Roaring Lion, the IDF said, referring to its ongoing military campaign against Iran. Israel’s ally, the United States – which joined the attacks against the Islamic Republic on February 28, sparking the wider Middle East conflict – refers to the campaign as Operation Epic Fury.Calling the strikes a significant blow, the Israeli military said, “The overall strikes have deepened the damage done to the Iranian terrorist regime’s air capabilities.”

Netanyahu warns Israel’s ‘adversaries’

Meanwhile, Israeli Prime Minister Benjamin Netanyahu issued a stern warning to his country’s “adversaries” after the IDF announced that Major General Majid Khadimi, the head of Iran’s Islamic Revolutionary Guard Corps (IRGC) intelligence organization and a senior commander of Unit 840 of the elite Quds Force, were killed in strikes targeting Tehran.In a post on Twitter, Netanyahu praised the military’s operations and warned of “severe consequences” for those trying to harm Israel or its citizens, warning against efforts by what he described as the Iranian “axis of evil.”“Whoever acts to murder our citizens, whoever directs terror against the State of Israel, whoever creates the Iranian axis of evil – their blood is on their heads. We are acting with strength and determination – we will reach out to everyone who seeks to harm us. We will continue to operate with full force on all fronts, until the threat is eliminated and all objectives of the war are achieved.”(With ANI inputs)

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Subu Vedam: Indian-origin Subu Vedam spared deportation after spending 40 years in prison for murder, judge says he has ‘grown as a person’

Indian-origin Subu Vedam spared deportation after 40 years in prison for murder, judge says he has 'grown as a person'

After spending more than four decades in prison and repeatedly avoiding deportation for a murder conviction that was later overturned, Indian-born Subramaniam “Subu” Vedam has won a landmark legal battle to remain in the United States.A US immigration judge has ruled that Vedam, 64, can remain in the country, rejecting efforts by the Department of Homeland Security (DHS) to deport him. The decision comes after a hearing in which the court found that Vedam had demonstrated rehabilitation and did not pose any threat to the public.Judge Adam Panopoulos said Vedam “has grown as a person” and “has begun to dedicate himself to enriching other people’s lives, and ultimately his own, through academic study and enrichment”. The judge said that allowing him to remain “would be in the best interests of the United States”.Vedam was detained by Immigration and Customs Enforcement (ICE) last year when he was about to be released from prison after serving a murder sentence. He spent more than 40 years behind bars for the 1980 murder of Thomas Kinser in Pennsylvania, a crime he has consistently denied.During a hearing, Vedam told the court, “I was young and stupid and I did a lot of stupid things.” He stated that he was innocent of the murder charge and said, “I have never stopped saying that I am innocent of this charge.”Even though the murder charge was acquitted, Vedam still faced deportation due to separate drug-related convictions from his younger years. As a teenager, he pleaded no contest to selling LSD, which authorities said made him eligible for deportation.At the hearing, a DHS attorney argued that Vedam should still be deported, pointing to past crimes including drug distribution, DUI and theft. But the court took Vedam’s side. His conduct over the decades in prison, his efforts in education and guidance, were all taken into account. Vedam earned several degrees, helped improve literacy among prisoners, and built strong relationships with his family.The judge said the evidence showed “genuine rehabilitation, consistent demonstration of good moral character over the past 40 years and strong family ties and communal support”.Vedam was born in Mumbai and moved to America in his childhood. He grew up in Pennsylvania, where his father worked as a physics professor. At the time of his arrest in 1982, he was close to becoming a US citizen.After the verdict, Vedam’s lawyer said that she would seek his release on bond. When released, he plans to live with relatives in California and has been offered a place in a doctoral program in applied anthropology.DHS has 30 days to appeal the decision. Till then Vedam will remain in custody.

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MisterBeast: All the Rakai Drama You Need to Know From MisterBeast’s $1,000,000 Streamer Event

All the Rakai Drama You Need to Know From MisterBeast's $1,000,000 Streamer Event

MisterBeast hosted a massive event where 50 popular streamers competed to win $1,000,000. The prize was up to one lucky fan and the competition was very exciting. Big names like Yourraz, Rakai, Ski Mask The Slump God and El Rubius reached the final round of the event. After many challenges, YourRAGE won the $1,000,000 prize. Even though YOURRAGE won the $1,000,000 prize, Rakai created a lot of drama that people are still talking about.Rakai had made it to the later rounds and was very close to victory. However, he was reportedly eliminated by YourRAGE in a challenge. Instead of leaving quietly, Rakai became upset. They argued, shouted and refused to leave the stage. The situation became so tense that MisterBeast had to step in and call security to remove him from the show. Some reports said that it took a while for security personnel to arrive, but eventually the situation was brought under control and the competition could continue.

What happened with the Rakai and El Rubius controversy?

After the removal, Rakai also spoke about the reaction he was receiving online. He said that El Rubias’ fans and the Spanish community were trying to cancel him because he used “expressions” After eliminating El Rubius. Rakai explained that he was just playing games and trying to be a good person. This made the storyline even more popular as it was now not just about the elimination but also about how fans reacted online.Despite the fact that the million-dollar prize had already been won by YourRAGE, Rakai’s activities during and after the contest have attracted widespread attention. Clips of the incident were posted on YouTube, and there was widespread discussion on social media about the appropriateness of Rakai’s behavior in response to his defeat. This shows the level of stress in such competitions, even for professionals.In the end, the main winner was YOURRAGE, but Rakai’s play made the event more memorable. Rakai became the center of attention amid debates on stage, calls for security and online controversy. For anyone following the event, this is all the Rakai drama from MisterBeast’s $1,000,000 streamer event you need to know.

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This 2000-year-old coin, collected as bus fare in the 1950s, has become a rare artefact. world News

This 2000-year-old coin collected as bus fare in the 1950s has become a rare artefact

A small bronze coin used as payment for bus travel in Leeds a few decades ago has now proved to have a deeper history than anyone could have imagined. An object that was initially considered an exotic item in a clerk’s cash desk has actually become a means of payment that belonged to an ancient civilization that existed more than two thousand years ago. The coin remained unnoticed by its owner until it was discovered after traveling from generation to generation within the same family.

Unusual coins unearthed from the Leeds Transport Company bus fare collection

According to the BBC, in the 1950s, James Edwards worked as chief cashier for the Leeds Transport Company. His role included collecting fares from bus and tram drivers across the city. Yet during these visits, he reportedly found coins that did not belong to him. Instead of discarding them, he put them aside. Over time, these coins were passed on to his grandson, Peter. For more than 70 years, the collection remained within the family, quietly preserved without further formal study. Peter, now 77, eventually became curious about a particular coin that was different. The markings suggested something old, something unfamiliar.His interest led him to investigate its origin. What he discovered was unexpected. The coin was not a modern foreign currency at all. It dates back to the Carthaginians, an ancient civilization with roots in the Phoenician world, and was minted around the 1st century BC in Cadiz, now a historic city in Spain.

Mailcart imagery and cross-cultural design of coins

Perhaps the most impressive aspect of this coin may have been its design. The obverse of the coin features the face of the god Melqart, depicted like Heracles of Greek legend, wearing his distinctive lion skin.It appears that such a mixture was no coincidence. During that time, coins minted in the Phoenician region sometimes used symbols associated with Greek culture to ensure greater attractiveness among traders. The design will help establish the origin of the coin in question. After Peter realized the importance of this discovery, he contacted Leeds Museums and Galleries. The museum has accepted this discovery into its archives for future reference.The coin will be kept at the Leeds Discovery Centre, where researchers and visitors can learn from it, the BBC reports.Peter reportedly felt it was the right decision. He noted that returning the coin to an institution where it could be properly studied would give it a more meaningful future than allowing it to remain in private hands.

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“Best friend’s grave”: Laura Loomer criticizes Candace Owens after calling presidential administration satanic, drags Charlie Kirk into feud

Laura Loomer criticizes Candace Owens after calling presidential administration satanic, drags Charlie Kirk into feud (Image via Getty)

Laura Loomer and Candace Owens are now in a very public fight, and it’s getting hotter by the day. It started on April 6, when Candace Owens posted on Instagram and called donald trumpAdministration of “Satanic.” His words were powerful and direct and they spread quickly online. Shortly thereafter, Laura Loomer responded. She did not step back. She reposted Owens’ statement and accused him of being disrespectful and fake to the man she once called her close friend. Loomer wrote, “Candace Owens is now accusing President Trump’s administration of being ‘satanic.’ Meanwhile, she’s dancing on the grave of her so-called ‘best friend.’ Her ‘best friend’ who didn’t invite her to his wedding.”The line became the center of controversy, as people tried to understand who Loomer was talking about and why the fight had suddenly become so personal.

Laura Loomer calls out Candace Owens after Donald Trump’s “satanic” comment and gesture charlie kirk in sharp reaction

“This is a Satanic Administration. We all realize that Satanic Zionists have taken over the White House, and Congress needs to move to remove Crazy King Trump,” Candace Owens wrote after sharing her post. He also said, “We are in uncharted territory. Leaders around the world need to act accordingly.”These comments were met with immediate reactions, but Laura Loomer’s response was the most impactful. Her “best friend” comment was believed to be aimed at Charlie Kirk, although she did not directly name him.It is important to note that despite the words used in the exchange, there are no verified reports that Charlie Kirk has died. This comment appears to be symbolic or sarcastic rather than factual.Loomer’s response shifted the conversation from politics to personal relationships. Instead of debating policy, the focus turned to loyalty, friendship, and past relationships. That’s why this moment garnered so much attention online.

Candace Owens talks about claims about Tucker Carlson, global fears and Erica Kirk’s future role in politics

Even before this latest confrontation, Candace Owens was speaking openly about her views. On the March 10 episode of his podcast, he discussed global tensions and his belief that hidden forces are influencing events.He also talked about Tucker Carlson and praised him. Referring to his viral post, he said, ‘Whatever he is doing is remarkable and brave.’ Carlson wrote, “Pray that the spell is broken and the world is saved.”Owens explained that the word “spelling” matters. She said, “Because the spell means that some kind of witchcraft or magic is at work.” He said that people reacted strongly because of that term and claimed, “People who practice occult magic are heading for World War III right now.”He also made claims regarding Charlie Kirk’s family, specifically Erica Kirk. Owens suggested that Erica could become a major political figure and even said there was a possibility that she could run for president someday. These claims are opinions and not confirmed political plans.

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Indian couple jailed in UK for running companies for more than 5 years despite legal ban; Involved in £2 million tax fraud

Indian couple jailed in UK for running companies for more than 5 years despite legal ban; Involved in £2 million tax fraud

An Indian-origin couple in the United Kingdom were sentenced after running companies for more than five years despite being legally banned from doing so. Bharat Jogia, 71, from the West Midlands region of England, was disqualified as a company director for 13 years in 2014. He pleaded guilty to disqualification after admitting that he caused Jogia Jewelers (UK) Ltd to falsely claim more than £2 million from HM Revenue and Customs (HMRC) as part of a tax fraud scheme.Despite the ban, Jogia continued to control two pharmaceutical companies, Diamond Pharma Ltd and BHJ Consulting Ltd. His actions came to light when both companies later ran into financial difficulty.Jogia’s wife, Louise Jogia, 57, was convicted of aiding her husband. She was listed as the official director of BHJ Consulting, but it was her husband who actually ran the business.Mark Stephens, chief investigator for the Insolvency Service, said: “Bharat Jogia has shown complete contempt for the law by breaching the disqualification ban imposed on his director for more than five years.” She added: “Louise Jogia acted as a front to protect her husband, signing documents and providing assistance where necessary.”Stephens said ignoring disqualifications is a serious offense and damages confidence in UK business.Jogia’s original disqualification would have prevented him from running, managing or promoting any company registered in the UK until 2027. He was given a nine-month prison sentence suspended for 18 months. Jogia will also have to complete 100 hours of unpaid community work and will be banned from becoming a company director for the next 10 years.His wife was sentenced to seven months in prison, also suspended for 18 months, and given a 10-year director ban.The couple avoid jail only if they do not commit any further crimes and follow court orders.Records show that Jogia had signed a disqualification agreement in June 2014 admitting his role in the fraudulent claims for Jogia Jewelers (UK) Ltd. The agreement prohibited him from being involved in the formation, marketing or management of any company.Investigators found that from the beginning of his disqualification until mid-2019, Jogia continued to operate Diamond Pharma and BHJ Consulting in all but name. He instructed lawyers, approved accounts, authorized agreements and managed staff at Diamond Pharma, receiving over £80,000 in consultancy fees.“Under Jogia’s management, Diamond Pharma Ltd also accumulated more than £445,000 in tax debt,” the Insolvency Service said. As a result HMRC took steps to wind up the company.For BHJ Consulting, Lewis Jogia provided the company’s trading history to the liquidators. Although she was listed as a director, tasks such as giving instructions, decisions on IT and supplier payments were performed by her husband. Bank records also revealed that the company account was used to pay the couple’s personal bills.

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6Ix9Ine Streaming: Rapper 6ix9ine officially retires from music, turns his focus to streaming

Rapper 6ix9ine has officially retired from music and focused his attention on streaming

Rapper 6ix9ine, also known as Daniel Hernandez, has surprised his fans with a shocking decision. The artist has announced that he is retiring from the music industry in a stream hosted by popular streamer Adin Ross. “Washed.” he adds, “I just know what I’m good at,” This shows that he wants to focus on something he enjoys and can be successful at. Fans who followed his music career were surprised by this sudden change.This was 6ix9ine’s first stream after getting out of jail. During the stream, Adin Ross asked him if he would be dropping any new music. 6ix9ine clearly said no and revealed that he is now going to focus solely on streaming. This moment which happened in livestream quickly went viral. This marks a major change for the rapper, who is known for his loud personality and colorful music career.

6ix9ine starts a new chapter focusing solely on streaming

With the shift to streaming, 6ix9ine will be spending more time on the Internet, engaging in activities directly with his fans. They will no longer have to record songs, but instead share themselves with the world through live videos, where people can interact and watch them at their convenience. This change gives him more control over his career and fan base. He appeared happy on the stream and was excited about his future in streaming, indicating he is satisfied with his life choices.Their transition to streaming has received mixed reactions from fans. Many appreciate that he is attempting to expand into other ventures, while others have expressed disappointment at his departure from music.One user said, “I don’t think the music industry is doomed. If he’s tired of singing, let him say so.”Said another, “I don’t blame him. He’s been broadcasting rap since 2018.”Ultimately, this is a historic decision for 6ix9ine, as he is retiring as a musician. While this may seem like bad news for the music industry, streaming sites will be getting another artist who knows how to entertain people. Now the spotlight will be on him, with everyone waiting to see how famous he becomes.

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There’s no end to the road for those not selected in the H-1B lottery: Immigration lawyers outline 8 best options

एच-1बी लॉटरी में चयनित नहीं होने वालों के लिए राह खत्म नहीं: आप्रवासन वकील 8 सर्वोत्तम विकल्प बताते हैं

Immigration lawyer Felipe Jimenez said there are at least 8 best options for people who were not selected in the H-1B FY 2027 lottery.

Not being selected in the H-1B lottery that concluded for fiscal year 2027 is not the end of the road for the American Dream, as there are many other visa programs and viable options for living legally in the U.S., said immigration attorney Felipe Jimenez. Many Redditors expressed their disappointment as they said this was their last chance to live in America. Jimenez said there are at least eight best options, not just the much-discussed O-Visa. The O-Visa has come on the radar as questions are being raised about whether people with exceptional abilities are actually getting this visa or whether it has become an alternative to the H-1B visa. Some experts suggested that there is a possibility that there could be a second lottery as they estimated that companies could not petition for all those selected in the lottery because the companies would have to pay a $100,000 visa fee. And so, a second lottery may be needed to fill all the cap spaces.

Cap-Free H-1B

The recently concluded lottery is for the H-1B cap, but there are also cap-free H-1B jobs. Universities and institutions of higher education, non-profit institutions affiliated with universities, non-profit research organizations and government research organizations are not subject to this Rs. 85,000 limit.

Convert to F-1 Visa

Returning to school is a viable option to remain legally in the US as it changes the visa program back to F-1 and provides additional time, making the individual eligible for OPT, OPT extension.

F-1 stem opt extension

STEM students on an F-1 visa who are already taking their OPT may qualify for a 24-month STEM OPT extension.

first day cpt program

Day 1 CPT Program is a type of educational program in the US that allows international students (usually on F-1 visas) to start working immediately on the first day of their course through something called Curricular Practical Training (CPT).Jimenez advised using this program with caution as it could lead to future visa denials if USCIS determines the program is not legitimate.

O-1 visa

This visa program is for people with exceptional ability in science, education, business, athletics, arts, film and television. Exceptional ability has to be proven through publications, awards, high salaries, etc.

L-1 visa

People who work for a multinational company can get an L-1 visa for intracompany transfer.

TN Visa for Canadians and Mexicans

The TN (Trade NAFTA) visa allows Canadian and Mexican citizens to work in certain commercial occupations in the United States. It’s fast and simple and there is no lottery and Canadians can apply for it directly at the border. However, this visa does not lead to a green card.

E-2 visa

It is for entrepreneurs who can make large investments in a US business. Individuals who have access to funds can take this path. USCIS will investigate the source of the funds.

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Why astronauts take plush toys into space: Baby Yoda, Snoopy and other mascots used as floating zero gravity indicators

Why astronauts take plush toys into space: Baby Yoda, Snoopy and other mascots used as floating zero gravity indicators

Plush toys traveling in space may seem unusual, yet they have quietly been a part of human space flight for decades. Missions conducted by organizations like NASA and companies like SpaceX often include small soft mascots inside spacecraft cabins. These objects are known as zero gravity indicators. As soon as a spacecraft leaves Earth’s gravitational pull and enters microgravity, they begin to float. That simple activity provides astronauts with an immediate visual signal about changes in the environment.This tradition dates back to early space missions, including Vostok 1. Over time, this has continued through lunar programs such as Artemis II and modern commercial flights. What started as a practical idea has gradually become a familiar and consistent element across generations of space exploration.

Plush mascots used in space missions

Rise: Artemis II mascot

Rise: Artemis II mascot

PC: ColumbiaOne

Rise (plush toy) is a white plush mascot selected for the Artemis II mission. It was designed by a young creator and features a cap adorned with Earth, galaxies, and rocket-themed details. The mascot is placed with the crew in the cabin of the spacecraft.It plays a functional role during flight. When the spacecraft leaves Earth’s gravitational influence, Rise begins to float freely inside the cabin. This activity provides astronauts with clear and immediate visual confirmation of microgravity conditions. The object is light and easy to see, making it suitable for this purpose. The use of RISE continues the long-standing practice of including a visual indicator to mark changes in the space flight environment, maintaining consistency with earlier missions.

Baby Yoda: Commercial Crew Flight

Baby Yoda: Commercial Crew Flight

PC: space

According to Space.com, Baby Yoda was aboard a space mission sent by SpaceX to the ISS. This plush toy became popular due to its widespread recognition and unique image. It was placed in the cabin before lift-off. During the voyage, Baby Yoda was used as an indicator of microgravity conditions. As the spacecraft entered microgravity conditions, the toy began to float, alerting the crew. This indicated that the spacecraft successfully entered orbit.Such a choice for the mascot is quite practical because the toy is easily recognizable, and at the same time, it is appropriate according to the informal practice of bringing some soft toys to demonstrate gravity transitions.

Snoopy: Longtime NASA Symbol

Snoopy: Longtime NASA Symbol

Snoopy has been associated with NASA since the late 1960s. Snoopy was involved in flights related to lunar exploration missions such as Apollo 10. Ultimately, Snoopy has become part of the bigger picture when it comes to NASA’s spaceflight awareness campaigns. Snoopy in his plush form has served as a zero gravity indicator in several missions. As the spacecraft entered microgravity, the mascot would begin floating around in the cabin. Snoopy’s continued presence on various programs shows that it has remained consistent throughout time.

Shaun the Sheep: Artemis I Mission

Shaun the Sheep: Artemis I Mission

PC: space

Shaun the Sheep was included in the unmanned Artemis I mission aboard the Orion spacecraft, the BBC reports. The mascot was placed inside the capsule prior to launch and remained onboard throughout the mission’s journey around the Moon and back.Prior to the mission, the plush character was taken through various training and introduction activities throughout Europe and the United States. These steps were part of the mission’s preparation and public engagement efforts. Once the spacecraft reached space, Shawn began floating inside the cabin, acting as a zero gravity indicator. Its motion provided a simple visual reference for the spacecraft’s transition into microgravity.

Tremor the Dinosaur: SpaceX Demo Mission

Tremor the Dinosaur: SpaceX Demo Mission

The Tremor dinosaur was carried on a SpaceX Crew Dragon demonstration mission, Space.com reports. The plush dinosaur has a sequined design, making it visually stand out inside the spaceship cabin. During the mission, Tremor served as a zero gravity indicator. As the spacecraft reached microgravity, the toy began to float freely, confirming to the crew the change in gravity conditions. Its movement was easy to observe due to its reflective surface and shiny appearance.The use of Tremor follows the same pattern seen in other missions with plush indicators. A small, lightweight object is selected, placed inside the cabin, and allowed to float once into space.

What is the significance of taking plush toys to space?

Plush animals may be considered fun items, but their presence on spacecraft is not accidental. Such objects, used by NASA and other companies like SpaceX, act as zero-gravity detectors. When a spacecraft separates itself from Earth’s gravitational field, the toy will begin to float, serving as a visual indicator that zero gravity has been reached.The movement of such toys helps astronauts confirm that zero gravity has occurred without relying too much on technical means. In fact, toys are commonly used because they can communicate very clearly what they want to convey.

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