NASA Space At the time, some astronomers suggested a collision with another object could’ve caused the asteroid to start spouting off, but a new paper from an international team of researchers concludes that Gault was actually ready to come apart, perhaps even without an impact to trigger the breakdown.”This self-destruction event is rare,” co-author Olivier Hainaut from the European Southern Observatory, explained in a release. “Active and unstable asteroids such as Gault are only now being detected by means of new survey telescopes that scan the entire sky, which means asteroids such as Gault that are misbehaving cannot escape detection any more.” The paper will be published in The Astrophysical Journal Letters. The images from Hubble show Gault being trailed by two narrow tails of debris, indicating the material was thrown off in a pair of short bursts lasting between a few hours and a few days. Active asteroid 6478 Gault last night from the @INGLaPalma after discovery by @TheGenghisKen @fallingstarIfA . The ejected dust extends > 400,000 km, more than the Earth-Moon distance.From observations by @astrostevanus and @Sun_d_citizen @AstroQUB pic.twitter.com/Xc1ByV4OhJ— Alan Fitzsimmons (@FitzsimmonsAlan) January 12, 2019 The asteroid 6478 Gault as seen by the Hubble Space Telescope. Two narrow, cometlike tails of debris indicate that the asteroid is slowly undergoing self-destruction. NASA, ESA, K. Meech and J. Kleyna (University of Hawaii), O. Hainaut (European Southern Observatory) We first noted in January that an asteroid discovered decades ago was showing signs of transforming into a comet, but now astronomers using NASA’s Hubble Space Telescope say the space rock may be completely falling apart.The 2.5-mile-wide (4-kilometer-wide) asteroid 6478 Gault is located in the asteroid belt between Jupiter and Mars, where it was first seen in 1988. Though it’s been observed by telescopes many times over the decades, it wasn’t until last November that scientists saw signs something was changing. By January, Gault had developed a cometlike tail of dust extending over 249,000 miles (400,000 kilometers). Sci-Tech Tags Post a comment There are around 800,000 known asteroids in the asteroid belt beyond Mars, but astronomers estimate that this kind of crack-up happens only once per year. The asteroid’s fragile state is attributed to something called the Yarkovsky-O’Keefe-Radzievskii-Paddack effect, or YORP torque. The basic idea is that electromagnetic radiation from the sun interacts with small objects like asteroids in ways that can cause them to spin faster and faster, becoming more and more unstable. “It could have been on the brink of instability for 10 million years. Even a tiny disturbance, like a small impact from a pebble, might have triggered the recent outbursts,” explained lead author Jan Kleyna from the University of Hawaii.Astronomers say the tails will begin to fade in the coming months as the dust disperses into space. That is, unless 6478 Gault continues to fall apart before our eyes. Share your voice 0
Crime scene officials inspect the site of a bomb blast inside a church in Negombo, Sri Lanka.Reuters file [Representational Image]After the gruesome Easter Sunday blasts in Sri Lanka, the plot took a major twist after the Islamic State claimed responsibility for the ghastly attack. In another major turn of horrific events, Fatima Ibrahim, the wife of millionaire-turned-suicide bomber Inshaf Ahmed Ibrahim, blew herself with her unborn baby and three kids after the police raided their residence. Three policemen were also killed in the incident.Inshaf, 33, along with his brother Ilham Ahmed Ibrahim, 31, were behind the blasts at churches and hotels in the island nation which killed 359 people and injuring many more on April 21.Fatima, the intelligence sources said, is believed to have been present amid a group of veiled suicide bombers swearing allegiance to the Islamic State, whose images were released by the jihadist organisation on Tuesday night. She can be seen, the sources said, on the right-hand side of the frame, standing behind her husband, reports Firstpost. Sri lankan bombersTwitter [Representational Image]Inshaf and Ilham were the sons of one of the wealthiest man in Sri Lanka, Mohammed Yusuf Ibrahim, who had contested elections on a Janatha Vimukhthi Peramuna party ticket. He was a close friend of Sri Lankan minister Rishath Batiudeen and was often seen at the former President Mahinda Rajapakse’s functions, adds the report.Mohammed Yusuf Ibrahim and his youngest son Ijaz Ahmed Ibrahim, 30, are being questioned by the police over the blasts.Fatima detonated the bomb fearing that she might be arrested by the police for her involvement in the terror outfit. She blew herself in the 3 storeyed luxury home at Dematagoda along with her kids.Inshaf owned a manufacturing plant, Colossus Copper in Colombo, which according to the investigators was used for making the suicide bomb vests used in the attack. On Sunday, nine workers of the factory were arrested along with the manager.The Sri Lankan defence ministry has stated that the terror attacks were carried out as a retaliation against the Christchurch massacre in New Zealand.
Ferrari Chairman and CEO Sergio Marchionne after the presentation of the new LaFerrari hybrid car at the 83rd Geneva Car Show.ReutersSergio Marchionne, the Italian-Canadian business magnate who was the chairman and CEO of Fiat Chrysler Automobiles, the chairman and CEO of Ferrari and the chairman of Maserati till last week, died at 66 on Wednesday. Marchionne was in a critical condition at Zurich’s University Hospital for complications after undergoing a surgical procedure on his right shoulder early this month.”Unfortunately, what we feared has come to pass. Sergio Marchionne, man and friend, is gone,” FCA chairman John Elkann, of the controlling Agnelli family, said in a statement. The deteriorating health condition of Marchionne prompted Fiat Chrysler Automobiles (FCA) to replace him with the head of Jeep and Ram brands, Mike Manley, on July 22. Sergio MarchionneSergio Marchionne was known for his masterstroke that saw the merger of the auto industry’s weakest companies — Fiat and Chrysler — in 2014. The intervention of Marchionne made the Italian and American multinational corporation the world’s seventh-largest automaker from the edge of closing down.Born in Chieti near Italy’s Adriatic coast on June 17, 1952, Marchionne had moved with his parents to Toronto in 1966. Marchionne joined Fiat in 2004. During his tenure at Fiat, Marchionne boosted the company’s value more than tenfold. It was Marchionne’s idea to spinoff supercar-maker Ferrari NV in 2015 from FCA, where Marchionne also served as CEO and chairman.
Photo: UNBThe largest Eid-ul-Azha jamaat (congregation) of the country was held at Sholakia Eidgah Maidan on Monday with the participation of thousands of devotees.Maulana Mohammad Hifzur Rahman conducted the Eid prayers. The devotees sought blessings for the countrymen and the Muslim Ummah.Two special trains ran between Bhairab-Kishoreganj and Mymensingh-Kishoreganj to facilitate the Muslims joining the country’s largest Eid congregation on the northern bank of the Norsunda River.Deputy Commissioner and Eidgah Management Committee President Md Sarwar Morshed Chowdhury said the 192th congregation was held peacefully.Mashrukur Rahman Khaled, superintendent of Kishoreganj police, said the devotees have completed their prayers without any problem.Tight security was put in place with members of law enforcement agencies guarding the congregation ground. Metal detectors were set up at the entrance and drone cameras were used for surveillance.Devotees were allowed to enter the ground after undergoing an exhaustive search.During the 2016 Eid-ul-Fitr congregation, militants had launched a surprise attack on a temporary police check post near the Eidgah, killing at least four people, including two policemen.