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Time of India
26-06-2025
- Science
- Time of India
Who sent mysterious radio burst in 2024? Study reveals the presence of a ‘zombie' NASA Satellite. Here's truth
In June 2024, astronomers detected a powerful burst of radio waves from within the Milky Way. After investigation, scientists now believe the signal came from a deactivated or zombie NASA satellite launched in the 1960s. This discovery could help researchers better understand unusual signals in space and the behavior of old satellites. Signal Detected from Within Our Galaxy A burst of radio waves was picked up by astronomers in June 2024. It was detected by the Australian Square Kilometre Array Pathfinder (ASKAP) in Western Australia. ASKAP has 36 identical dish antennas. This array searches for short but strong radio signals in space. Play Video Pause Skip Backward Skip Forward Unmute Current Time 0:00 / Duration 0:00 Loaded : 0.00% 0:00 Stream Type LIVE Seek to live, currently behind live LIVE Remaining Time - 0:00 1x Playback Rate Chapters Chapters Descriptions descriptions off , selected Captions captions settings , opens captions settings dialog captions off , selected Audio Track default , selected Picture-in-Picture Fullscreen This is a modal window. Beginning of dialog window. Escape will cancel and close the window. Text Color White Black Red Green Blue Yellow Magenta Cyan Opacity Opaque Semi-Transparent Text Background Color Black White Red Green Blue Yellow Magenta Cyan Opacity Opaque Semi-Transparent Transparent Caption Area Background Color Black White Red Green Blue Yellow Magenta Cyan Opacity Transparent Semi-Transparent Opaque Font Size 50% 75% 100% 125% 150% 175% 200% 300% 400% Text Edge Style None Raised Depressed Uniform Drop shadow Font Family Proportional Sans-Serif Monospace Sans-Serif Proportional Serif Monospace Serif Casual Script Small Caps Reset restore all settings to the default values Done Close Modal Dialog End of dialog window. Usually, radio bursts come from distant galaxies. These signals often release energy equal to what the sun produces in three days. But this signal came from much closer. It started inside the Milky Way galaxy, very near to Earth. ASKAP could not focus on it clearly, similar to a phone camera failing to focus on a nearby object. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like 9 years ago - Most beautiful twins. Their appearance today will shock you Novelodge Undo Also Read: Roofman: Is Channing Tatum starrer crime drama based on a true story? Here's trailer, release date, plot and cast NASA Satellite Named as Likely Source A team of scientists investigated the source. They ruled out new space objects. The only possible match was an old NASA satellite called Relay 2. This satellite was launched in 1964. It stopped working in 1967 after its two transmitters failed, a New Scientist report said citing a new preprint study. Live Events Despite being inactive for many years, Relay 2 may have created the radio pulse detected in 2024. The researchers shared their findings in a study on arXiv on June 13. The study is not yet peer-reviewed. Unusual Nature of the Signal The signal lasted only 30 nanoseconds. It was very strong but very brief. The pattern of the pulse did not match any known function of Relay 2. This ruled out the chance that it was a planned transmission. Researchers looked into other possible causes. They believe it may have happened because of a micrometeorite impact or an electrostatic discharge. Both events can create powerful radio signals in space. Also Read: Marge Simpson Death Rumours: Does Marge Simpson die in The Simpsons Season 36 finale? Here's the truth Possible Reason Micrometeorites are tiny space rocks. When they hit a spacecraft, they can cause changes in the spacecraft's surface. These changes may increase electrical activity and release radio waves. Scientists have noted that micrometeorite impacts can directly create such signals. According to the researchers, if a micrometeorite hit Relay 2, it might have created plasma. This would allow electric charges to build up and discharge quickly. That could explain the strong radio pulse. Electrostatic Discharge More Likely Scientists say that electrostatic discharge (ESD) is a more likely cause. ESD happens when electric charges between two surfaces suddenly flow. Spacecraft surfaces can carry different charges due to space conditions. Relay 2 was built many years ago. Its materials might hold electric charges more easily than modern satellites. When the charge becomes too strong, it can discharge and produce radio waves. According to the study, ESD has long been known to create radio pulses. The research team believes Relay 2's old design may have made it more likely to generate a strong pulse in space. FAQs What is electrostatic discharge and how can it affect satellites? Electrostatic discharge is the sudden flow of electricity between charged surfaces. In satellites, it can create short radio bursts or damage electronic parts. Why is this radio signal from Relay 2 important to scientists? The signal helps scientists understand how old satellites might still produce activity. It may also offer a way to detect discharges from space debris or inactive satellites.
Time of India
16-06-2025
- General
- Time of India
Air India Crash: Did an electrical failure doom the Dreamliner as both engines failed mid-air?
Three days after the deadly crash of the Air India Express Dreamliner in Ahmedabad—an accident that killed 272 people—the aviation world is still grappling with one burning question: what caused a modern, twin-engine jet to stall and crash just 32 seconds after take-off began? The lone survivor and another pilot on the ground reported hearing a loud boom during take-off, leading experts to suspect a possible engine failure, reported TOI. While losing one engine isn't usually disastrous—modern jets can safely take off, climb, and return on a single engine—what followed defies the norm. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Jesus' Tomb Is Opened And Scientists Find Something Unbelievable Novelodge Did the second engine also fail? If not, what else could have triggered the sudden crash? A rare and puzzling event Live Events Twin-engine failures are extremely rare—only seven such cases have been recorded globally in over 70 years. Past causes include bird strikes (like the "Miracle on the Hudson" in 2009), shutting down the wrong engine (as with British Midland in 1989), or fuel contamination. But in this case, a bird strike has already been ruled out, noted the report. What makes this crash particularly unusual is the aircraft involved: the Boeing 787 Dreamliner—a "more-electric" jet designed to save fuel and reduce maintenance by replacing many traditional systems with electric ones. This shift makes the ongoing investigation unprecedented. Is this a one-off glitch, or does it expose a design flaw in one of the world's most advanced planes? According to the news outlet, a senior 787 pilot said it's likely one engine partially or completely shut down after the boom. But with one engine still working, why didn't the aircraft climb and return? One theory is that the pilots were startled by the sound and forgot to retract the landing gear, increasing drag. Another suggests that the co-pilot may have mistakenly retracted the wing flaps instead of the landing gear—though even that shouldn't have been fatal with one engine still functioning. Did the plane lose all power? Some senior pilots believe both engines failed moments after lift-off, which would explain why the landing gear was never retracted, TOI noted. One possible cause: failure of Variable Frequency Starter Generators (VFSGs)—key components that provide electric power and start the engines. If they failed, they could have knocked out the Electronic Engine Controls (EECs), essentially the jet's "throttle computers." Without them, the engines may have dropped to idle power, leaving the pilots unable to increase thrust. Worse, if both engines and the Auxiliary Power Unit (APU) were disconnected from the electrical system, the EECs would stop working altogether. While APU can act as a backup, it takes about 90 seconds to spool up and provide support—far more time than the 32 seconds the plane had before crashing. In short: even if pilots called for help, there wasn't enough time for backup systems to kick in. Interestingly, there's some speculation that the Ram Air Turbine (RAT)—a small emergency wind turbine that pops out to provide basic power—was deployed. Some pilots say a dark blur in crash footage could be the RAT, which would only appear if all main power sources had failed. Unlike the APU, though, the RAT doesn't produce enough power to safely fly or land a plane—only to operate bare-minimum systems. Weight, thrust, and possible mistakes Other theories focus on human error and aircraft weight. Captain Amit Singh, an air safety expert, suspects the aircraft may have been overloaded—possibly with cargo. TOI further reported that if the actual weight was more than what the pilots had entered into the system, it could explain the longer take-off roll and why the plane couldn't maintain altitude after losing an engine. Another senior pilot speculated that the crew might have mistakenly entered only the aircraft's "zero fuel weight"—excluding the 50–60 tons of fuel onboard. That would have led to lower thrust settings during take-off, which, when paired with an engine failure, could have proved disastrous. But others pushed back on that idea. A B787 commander argued that the aircraft's weight sensors—linked to the landing gear—would have alerted the pilots if their inputs were significantly off. Regardless, one fact appears increasingly clear: at least one of the two engines wasn't producing thrust when the plane hit the ground. Photos from the crash site show no fan blade damage or casing breaches on one engine, which experts say suggests it was either shut down, flamed out, or idling. Some have floated the idea that the wrong engine was shut down—but that action typically happens at around 400 feet of altitude, and the plane never got that high. What's next? The investigation is now focusing on the electrical systems and engine response—especially the role of the VFSGs, EECs, and whether the APU had time to engage. Sabotage has already been ruled out by the National Security Guard, shifting attention to potential maintenance lapses and design vulnerabilities. The Dreamliner is packed with cutting-edge tech, including: Four Variable Frequency Starter Generators (VFSGs) on the engines Two APU Starter Generators (ASGs) for emergency backup A Ram Air Turbine (RAT) for last-resort power Two lithium-ion batteries, including one for backup flight controls If the cause turns out to be a systems glitch or design weakness, this crash could reshape how these high-tech aircraft are flown and maintained worldwide
Time of India
13-06-2025
- Business
- Time of India
Iran-Israel War: Why Israel bombed Iran's nuclear sites and what it means for global security, oil, and trade
In the early hours of Friday, Israel launched airstrikes deep inside Iranian territory, targeting nuclear and military infrastructure. The operation—called Operation Rising Lion—marked a dramatic escalation in long-standing tensions between the two nations. Here's why Israel carried out the strikes, what it hopes to achieve, and what it means for the region. What triggered the Israeli strikes? According to Israeli officials, the decision to launch Operation Rising Lion was based on growing concerns that Iran was close to developing a nuclear weapon. Israeli Prime Minister Benjamin Netanyahu said the strike was a 'targeted military operation to roll back the Iranian threat to Israel's very survival.' 'This operation will continue for as many days as it takes to remove this threat,' Netanyahu said. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Dog licks arent kisses. Heres what your dog really means when it licks you. Novelodge Undo An Israeli military official described the assault as a 'preemptive, precise, combined offensive,' targeting Iran's nuclear programme and long-range missile capabilities. Iran-Israel War: What's next, what it means for the world and trade? Israel says the operation could continue for several days. The situation remains tense and unpredictable. The coming days will determine whether the conflict widens or whether diplomatic channels intervene to prevent further escalation. Live Events You Might Also Like: Oil jumps more than 12% as Israel strikes Iran, rattling investors The Israeli strike on Iran's nuclear facilities could reshape several layers of international relations and global trade. In the short term, it increases the risk of a broader military conflict in West Asia. If Iran retaliates directly or through its allied groups in Lebanon, Syria, Iraq, or Yemen, the region could spiral into prolonged violence. Israel-Iran Conflict's impact on Trade For global trade, the immediate concern is the Strait of Hormuz, a critical shipping lane through which nearly a fifth of the world's oil passes. Any Iranian attempt to disrupt this route—something Tehran has previously threatened—could trigger a sharp rise in global oil prices, disrupt energy supply chains, and affect economies already under inflationary pressure. Diplomatic Realignments Countries that have maintained strategic neutrality between Israel and Iran—like India, China, and Gulf nations—may now face diplomatic challenges. They will be under pressure to either condemn or support the action, which could alter trade and defence ties in the region. On the military front, this strike could encourage a shift in alliances. Arab states that have normalised relations with Israel under the Abraham Accords might quietly support the move, seeing Iran as a shared threat. Meanwhile, Iran may turn more aggressively toward China and Russia for diplomatic and military backing. You Might Also Like: Who was Hossein Salami, the chief of Iran's Revolutionary Guards killed in Israeli strike The situation also places the United States in a tight spot. While Washington was reportedly informed in advance, it has publicly distanced itself from the strikes. However, any escalation that affects US troops in the region could force American involvement, intentionally or otherwise. In the longer term, this strike may trigger a new phase in the nuclear arms race in West Asia. Iran might accelerate its weapons development in response, prompting neighbouring states like Saudi Arabia to pursue similar capabilities. What targets did Israel hit? Israel confirmed that dozens of fighter jets carried out coordinated attacks on nuclear and military sites across Iran. The IDF said, 'Dozens of IAF jets completed the first stage that included strikes on dozens of military targets, including nuclear targets in different areas of Iran.' Netanyahu elaborated on the targets: 'We struck at the head of Iran's nuclear weaponistion program. We targeted Iran's main enrichment facility in Natanz. We targeted Iran's nuclear scientists working on the Iranian bomb. We also struck at the heart of Iran's ballistic missiles program.' You Might Also Like: Israel strikes Iran's nuclear sites as hinted by Trump, declares state of 'emergency' Explosions were reported northeast of Tehran and near the Natanz nuclear site. Witnesses confirmed that multiple blasts were heard close to a uranium enrichment facility. Who were killed in the attack? Iranian state media reported casualties, including key figures linked to Iran's nuclear programme. Hossein Salami, commander-in-chief of the Revolutionary Guards, is believed to be among the dead. Fereydoon Abbasi, former chief of the Atomic Energy Organisation of Iran, was also reported killed. Why Israel hit Iran now? Tensions between Israel and Iran have been high for years, but the Israeli leadership says the nuclear threat has reached a critical point. A statement from the Israeli military said, 'Today, Iran is closer than ever to obtaining a nuclear weapon. Weapons of mass destruction in the hands of the Iranian regime are an existential threat to the State of Israel and to the wider world.' The timing may also be connected to recent intelligence reports, growing regional instability, and fears that Iran could activate proxy forces against Israel. How has Israel justified the attack? Netanyahu framed the strike as an act of national security and regional defence. 'This is a clear and present danger to Israel's very survival,' he said. 'In defending ourselves, we also defend others. We defend our Arab neighbours. They, too, have suffered from Iran's campaign of chaos and carnage.' How has Iran responded so far? As of now, Iran has not officially confirmed the full extent of the damage but has acknowledged attacks near key facilities. Flights have been suspended at Tehran's international airport, and explosions were reported in several areas. Iran has not publicly announced retaliation yet, but Israel has declared a state of emergency and is preparing for potential counterattacks. Air raid sirens were heard in Jerusalem, and civilian air traffic to Tel Aviv has been redirected. Where does the US stand? The US was informed in advance of Israel's intentions, according to a CBS report. The Biden administration had advised some Americans to leave the region. However, Washington has distanced itself from the attack. US Secretary of State Marco Rubio said, 'Israel advised the US it attacked Iran for self-defence.' He added, 'The US was not involved in the Israeli strikes on Iran.' Former US President Donald Trump also weighed in before the attack, saying, 'I don't want them going in because, I mean, that would blow it.'
Time of India
24-04-2025
- Sport
- Time of India
Rio Olympic champ Dalilah Muhammad lauds Neeraj Chopra's feats
Rio Olympics 400m hurdles gold winner Dalilah Muhammad is the brand ambassador of TCS World 10k in Bengaluru. (TOI Photo: Syed Asif) Keywords: Category / suppl. Categ.: IPTC-Keywords: Place:Bangalore Toi Bengaluru TOI Credits: Photographer:Syed Asif BENGALURU: American track star Dalilah Muhammad , women's 400m hurdles gold winner at the Rio Games, lauded champions like Neeraj Chopra and Letsile Tebogo who battled to glory without the best of support systems and hailed their phenomenal achievements. 'I remember watching Neeraj win the gold in Tokyo. That was actually my first experience watching him compete, and honestly, it was just phenomenal,' said Dalilah. 'And then you get to see the country that supports it and just what that does for the community and the people. It's just so inspirational,' said the international brand ambassador of the TCS World 10K Bengaluru . 'America has great inspirational athletes. But some of my favourite athletes, and their stories that inspired me way more, come from elsewhere. I recently went to Botswana, I know Tebogo. And just being able to witness an athlete win an Olympic medal from a country that doesn't have the system like America does, to produce such greatness is honestly phenomenal. And I think that can be done in so many different places like India,' she said. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Dog licks arent kisses. Heres what your dog really means when it licks you. Novelodge Undo The US athlete who won two Olympic gold and two silver besides owning the world record, is gearing to bow out on a high after missing the Paris Games. 'I think a lot of people expect you to kind of go out when you can no longer do it at all. And for me, I want to go out knowing that I can still push myself,' she promised. 'This year, just as luck would have it, the World championships is the last competitive competition on our schedule. So hopefully I'll be in Tokyo and that'll be my last,' said the ace athlete, who last month ran her best season time at the Botswana Grand Slam meet . Slam series a big boon Giving her vote for the Grand Slam track series launched by Michael Johnson, Dalilah Muhammad said: 'I absolutely love it. I think for us that means just making our sport a professional sport. We have the Diamond League schedule, but there's not enough and we need more. The Grand Slam is really trying to push forward and giving athletes more opportunities to make money. It has started with the running events, but down the line we should also have the field events.' She also backed World Athletics for introducing prize money in the Olympics. 'I'm for it. We don't do it for the money; however, it definitely helps. We need ways to support ourselves and be at such a high level, like the Olympics. I believe athletes should definitely be able to make a living from that.' On her glittering career, Daliah said her best moment was the world record. 'My best moment was breaking that world record in 2019, it was a 16-year-old record. For me it was more so about the talent of the women that came before me and that haven't broken that record. So, it was just one of those redefining moments -- of where I had come and where I can even go further.' Ready to leap for Faith Expressing joy on three-time Olympic and World champion Faith Kipyegon 's goal to be the first woman to run a mile under four minutes in June, Dalilah said: 'When I heard about it, I was like, 'How can I be there? How can I witness it in person?' It's hard for me to even put into words. Imagine what that means for just women's sports. And to just hear women trying to break four minutes is amazing.' The Kenyan holds the women's mile world record of 4min 7.64sec, which she set in 2023.
