Cassini Watches Explosion in Saturn’s E Ring

first_imgSomething strange happened in the E ring of Saturn last January.  The incident is forcing scientists to conclude the ring cannot be very old.    The E ring is the broad, extended ring that extends from Mimas to Rhea (click here for diagram), over three times as broad as the main ring system but much more diffuse.  It reaches its maximum density at the orbit of Enceladus.  This fact leads Cassini scientists to anticipate finding ice geysers on the moon when Cassini flies by it at close range next March.    Dr. Don Shemansky reported at a news conference today that the Cassini UVIS instrument (ultraviolet imaging spectrograph) measured a surge in atomic oxygen coming from the E ring.  Measurements beginning in December showed a sudden rise in oxygen in late January that dissipated by April.  Apparently a collision in the ring ionized water molecules among the icy particles.  Electrons in the plasma sheet around Enceladus quickly recombine with these ions, forming neutral atoms which are swept into the vacuum, eating away the ring.  With evident surprise, he told the press that this one incident resulted in a mass loss equal to the total mass of micron-sized particles in the entire E ring.  Extrapolating backward, assuming this event was not atypical, he calculated an upper limit of 100 million years for the lifetime of the ring.    Dr. Larry Esposito said later in private conversation that the incident may have been caused by two large bodies colliding within the ring.  He estimates such an event could occur once every 4 to 10 years; if so, it was a fortuitous circumstance for Cassini, at the start of its 4 year tour, to witness the event.  Whatever happened, it was abrupt, severe, and short-lived.    In the press conference Q&A, Dr. Shemansky, noting the bland expressions in the audience, said he must have understated the “spectacular nature” of this discovery.  So he repeated it, with emphasis: the mass quantity lost in the event was equal to the total mass of all the micron-size particles in the entire E ring – in just four months.    A press release and image can be found at the Cassini website.Update 07/11/2006: the source of the oxygen is the moon Enceladus, which is erupting water out of its south pole.  See the 07/11/2006 and 11/28/2005 reports.This discovery adds to others that have led most ring scientists to conclude that planetary rings must be young.  A hundred million years sounds like a long time, but is a mere blink of an eye compared to the assumed age of the solar system (about one fiftieth of 4.5 billion years).  Notice that they did not say the ring is 100 million years old, but that it could not be older than that.  To believe it is much younger is reasonable in light of the evidence; it would seem a stretch to imagine an E ring many orders of magnitude thicker millions of years ago.  Today the E ring is tenuous and mostly composed of fine particles.  A much more massive E ring would seem to correspond to an epoch with more impactors flying around, resulting in exponentially faster erosion.    This age limit is not a problem for those who believe the solar system was created recently.  It is only a difficulty, an anomaly, a surprise, a puzzle for those locked into a mindset that the earth, and life, evolved slowly over vast periods of time.(Visited 13 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

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Weave Goes 1.0: Firefox Gets an Official Bookmark Syncing Tool

first_img8 Best WordPress Hosting Solutions on the Market Mozilla just announced that Weave, its official synchronization tool for Firefox, has just hit version 1.0 and is now generally available. Weave is a free browser add-on that can seamlessly sync bookmarks, saved passwords, browsing history and open browser tabs between different computers that run Firefox. Weave also runs on Mozilla’s mobile browser for the Nokia N900.Mozilla announced the Weave project in late 2007. Weave is compatible with Firefox 3.5 and up.Getting Started To use Weave, you have to register for an account with Mozilla. The plugin will automatically prompt you to create this account after the installation. Advanced users who are worried about their privacy can also use their own servers as a repository for their data. It’s worth noting that all of the data you transfer to Mozilla’s servers is encrypted.Weave vs. XMarksOf course, Weave isn’t the only solution for syncing bookmarks and XMarks is currently the most popular bookmark syncing tool. Unlike Weave, XMarks isn’t just compatible with Mozilla’s browsers but also supports Safari, Chrome and Internet Explorer. XMarks can sync bookmarks between these browsers.Weave syncs a lot more than just bookmarks, however. Weave also syncs passwords and your browsing history, for example. In future versions, Mozilla also plans to allow users to sync add-ons and other browser customizations. A Web Developer’s New Best Friend is the AI Wai… Related Posts Why Tech Companies Need Simpler Terms of Servic…center_img Top Reasons to Go With Managed WordPress Hosting frederic lardinois Tags:#Browsers#Product Reviews#web last_img read more

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Could have done little to prevent celebration, say police

first_imgA day after the video of a rousing welcome being given to seven accused in the Bulandshahr violence that led to the murder of a police officer by a mob in December 2018 went viral on social media, the police said they could have done little to prevent the “immoral” behaviour of their supporters and family members.In the video, people could be seen garlanding the accused as they come out of the district jail in Bulandshahr after they secured bail from the Allahabad High Court in the sedition charge that was sanctioned by the Uttar Pradesh government. Slogans such as ‘Bharat Mata ki Jai’ and ‘Vande Mataram’ could also also be heard.Santosh Kumar Singh, SSP, Bulandshahr, said: “We felt bad as they are accused in a case where a fellow officer was killed, but we could not have prevented family members and supporters from welcoming the accused granted bail by the High Court. The slogans were not provocative either.”Mr. Singh added that the accused didn’t come out in a group. “They trickled out one by one.”The accused included Shikhar Agrawal, a member of Bharatiya Janata Yuva Morcha, Upendra Raghav, former district president of Bajrang Dal, and Jitendra Malik, an Army man. The video suggests that a party was also given in their ‘honour’. “We were not aware of it. Even the media was not invited. The photos have been circulated by the supporters,” the SSP told The Hindu.The seven are out of the 44 people booked by the police in what they described as a “watertight” case. They were allegedly part of the mob that set Chingrawati police chowki on fire after a cow carcass was found in the area. In the violence that ensued, SHO Subodh Kumar Singh was killed and a local, Sumit, also lost his life. ‘Not murder accused’“Those who have been granted bail are not accused of murder. Apart from sedition, they have been charged with rioting and inciting violence,” said Mr. Singh.Retired police officer Maxwell Pereira said the celebration of crime and criminals is an “immoral act” but there is very little police could do in such cases.last_img read more

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Kuzma, Lakers overcome Harden’s 51 to end Rockets’ streak

first_imgAsian shares slide on weak Japan data; US markets closed The game was tied before Los Angeles scored 10 straight points — while Houston missed seven shots in a row — to go up 110-100 with about four minutes left.Houston ended an almost four-minute scoring drought when Harden made a free throw, and he added three more after being fouled on a 3-point attempt a few seconds later to cut it to 110-104. But former Rocket Corey Brewer made a 3-pointer before Lonzo Ball hit two free throws to make it 115-104.FEATURED STORIESSPORTSWATCH: Drones light up sky in final leg of SEA Games torch runSPORTSSEA Games: Philippines picks up 1st win in men’s water poloSPORTSMalditas save PH from shutoutHarden powered Houston on a night when Chris Paul had just eight points before leaving early in the fourth quarter with a sore left leg.The Rockets made seven free throws down the stretch but hit just four field goals in the last eight minutes — all in the final 1:05. Kuzma was unstoppable in the first half, making all nine of his shots, including six 3-pointers. He cooled a bit after the break and finished 12 of 17 overall and 7 of 10 from deep.The Lakers led 100-92 after a 3-pointer by Josh Hart with about nine minutes to go, but the Rockets scored the next eight points. Trevor Ariza led the way in that span, making five points and blocking a shot by Brandon Ingram.The Rockets opened the third with a 6-1 run for their first lead of the game, 65-64, with about 9 1/2 minutes left in the quarter.Los Angeles had a five-point lead after a three-point play by Kuzma midway through the quarter. The Rockets then used a 10-2 run, with five points each from Gordon and Harden, to go up 78-75 with about five minutes left in the third.The Lakers got going again after that, using a 10-3 run highlighted by 3s from Kuzma and Ball to regain the lead, 85-81.ADVERTISEMENT LATEST STORIES Brace for potentially devastating typhoon approaching PH – NDRRMC The cold returns for Winter Games in mountainous Pyeongchang 8th Top Leaders Forum assessed the progress of public-private efforts in building climate and disaster resilient communities Cayetano: 4 social media groups behind SEA Games ‘sabotage’ Los Angeles Lakers forward Larry Nance Jr. (7) reaches for a rebound between Houston Rockets forward Trevor Ariza (1) and guard Chris Paul (3) in the first half of an NBA basketball game. APHOUSTON — Rookie Kyle Kuzma set career highs with 38 points and seven 3-pointers, and the Los Angeles Lakers overcame 51 points from James Harden to end the Houston Rockets’ 14-game winning streak with a 122-116 victory Wednesday (Thursday Manila time).It was Houston’s first loss since Nov. 14 and snapped a three-game skid for the Lakers.ADVERTISEMENT MOST READ Paul tied it on a 3-pointer later in the third, but Brewer made the last five points of the period to put the Lakers up 94-89 entering the fourth.The Lakers led by 22 points during the first half, but Houston used a 12-2 run midway through the second to cut the deficit and a 7-2 spurt to end that quarter to get within 63-59 at halftime. Do not bring these items in SEA Games venues Read Next BI on alert for illegally deployed OFWs to Iraq Police teams find crossbows, bows in HK university PLAY LIST 01:29Police teams find crossbows, bows in HK university01:35Panelo suggests discounted SEA Games tickets for students02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City Typhoon Kammuri accelerates, gains strength en route to PH Don’t miss out on the latest news and information. View comments Kammuri turning to super typhoon less likely but possible — Pagasalast_img read more

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ICC World T20: Shoaib Malik and Kamran Akmal help Pakistan thrash India in warm-up game

first_imgShoaib Malik and Kamran Akmal tormented Indian bowlers to smash a brilliant 92 in 50 balls, helping Pakistan to beat India by 5 wickets in the World T20 warm-up between India and Pakistan at Colombo on Monday.Shoaib Malik scored 37 off 18 balls to help Pakistan chase down the target with Kamran Akmal at the Premadasa stadium.Pakistan chased down the target in 19.1 overs and Kamran Akmal finished the game off in style, hitting a six off Irfan Pathan’s delivery.Akmal’s score of 92 had 5 fours and 6 sixes. His knock came handy at a time when Pakistan were struggling at 91/5.Earlier, Virat Kohli and Rohit Sharma scored 75 and 56 respectively to help India post a mammoth 186 run target against Pakistan.The pair added 127 runs for the third wicket to put the Men in Blue in a commanding position before they open their campaign against Afghanistan on Wednesday.last_img read more

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Crocs, Rocks and Tropical Storms

first_imgMany of us have experienced adventure on our way to a Touch Football tournament…a flat tyre while taking that “shortcut” your mates suggested was a good idea…the after-effects of a dodgy chiko roll at a late night roadhouse…or having your luggage end up on the other side of the country. Next time you face a hurdle or two in getting to your next game, spare a thought for the Ramingining team that competed at the recent Northern Territory Touch Football Titles. For those that don’t know, Ramingining is about 530km east of Darwin in East Arnhem Land, and if you want to drive to the NT capital, the best you’ll do is seven or eight hours dodging potholes all the way to the city. Two teachers from the Ramingining School – Cam Adams and Joseph Smith – came up with the idea to get a team together from the Indigenous community, and prepare them to compete at the NT Titles.  The fact none of the boys had ever played the game before (except Cam, a former Barbarians, WA and Cook Islands representative player) did nothing to curb the enthusiasm that Cam and Joseph had for the task of competing. The plan eventually went before another teacher – Geoff Guymer – who helped draft a letter to the East Arnhem Shire and the office of Malindirri McCarthy (MP for Arnhem Land).  The Shire granted support, while Ms McCarthy contributed some of her own money to help the team.  The NT Touch budget also assisted, and from there, Cam, Joseph and the team never looked back. Ever had trouble getting players committed to training?  It wasn’t a problem with these boys, so long as they had a way to get there for the daily 4pm sessions. “Joseph and I literally had to drive around the community in our cars to pick up the boys for training”, said Cam. “A lot of people get used to having an oval to train on – you know – a flat surface, good grass cover.  For us, it was just an open space – the surface wasn’t level, and we had anthills, potholes and tree stumps to watch out for.” Training didn’t always go well, as Smith explains. “We had a public holiday the other week (in late April).  The shop was shut, so it meant most of the boys hadn’t had their usual sugar fix, so they were flat and didn’t have much energy for training.” No doubt plenty of coaches would love the commitment to attend training that this team shared.  Tribal law isn’t what it once was, but missing “ceremony”, which often meant a funeral with associated dance, is still very much an issue to the elders. “We were really impressed with the commitment of the boys to their training.  Missing ceremony in the old days meant a spear through the leg!  These days, the elders yell at them, but it’s punishment they were prepared to wear for the good of the team”, said Smith. Now think back to that “horror” trip you might have done to get to a Touch Football event, and spare a thought for the Ramingining boys, who at the start, had a pretty straight forward plan to take the bumpy road into Darwin for their first taste of Touch Football competition. “We got word about a week out that the road from Ramingining to Maningrida was impassable because of flooding, so it meant a change of plans – drive 40km, then a boat across a river – followed by a further 60km by road into Maningrida”, said Adams. “Joseph got his boat sorted – a small tinnie with a 30 horsepower motor on the back.  We loaded up all the boys & luggage, and had to move fast with a tropical storm coming in.  We hit a mud flat and had to lift the engine with everyone out to drag the boat to deeper water.  Getting wet wasn’t the problem – but we all know there are plenty of big crocs in the river!” The team eventually got across the river…and without anyone getting taken by one of the local crocodiles.  But with no car meeting them on the other side, and Smith having little luck using the local language to get help, it was looking like they might not get to their flight. Help eventually arrived, and for most of the boys, it was a nervous first flying experience.  They didn’t know much about taking to the air, but knew a plane had crashed in the Territory only a few weeks earlier. The Ramingining Men’s Open enjoyed fine dining at 30,000 feet – snacking on sandwiches and dipping biscuits in orange juice!!  And they touched down in Darwin at 6:10m….plenty of time for their first match at 6:50pm. Heading into that first game, only Cam Adams had been on a touch field before.  By the end of the weekend, the Ramingining boys had had a great time – the highlight a seven-all draw with Alice Springs. “The boys thought that was the grand final….in fact I think they still think they’ve won”, said Adams. Cam Adams was not only impressed with the commitment of the team to the game, but also how quickly the community had come to accept him since his move from Western Australia last year. “It usually takes a long time to get the trust of the community.  The fact as a new teacher I was trusted to get the boys onto this trip meant a lot to me”, said Adams. Kings of the NT Titles…Kings of Ramingining….at least for one weekend!  And they’re already planning to do it all again next year….with the help of a bigger boat.Story taken from the Northern Territory Website.last_img read more

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a month agoParents feel Chelsea’s academy players now have chance

first_imgParents feel Chelsea’s academy players now have chanceby Paul Vegasa month agoSend to a friendShare the loveChelsea’s academy players feel there’s now a genuine path to the first team.The Daily Mail says parents, coaches and players share the sense of excitement, according to those who frequent the matches for the youth sides at the training ground in Cobham. “People suddenly feel like that if their son is good enough, he’s going to get a chance in the first team,” said one watcher. “Before it was just about going out on loan.” About the authorPaul VegasShare the loveHave your saylast_img read more

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Zachary Quinto And Alanis Morissette Attend Kiehls Earth Day Event

first_imgAs reported by LookToTheStars.org last week, to celebrate their fifth Limited Edition Label Art Series for Earth Day, Kiehl’s Since 1851 partnered with Zachary Quinto and Alanis Morissette with a Limited Edition Ultra Facial Cream to benefit Recycle Across America. They celebrated this collaboration last week at the Kiehl’s store in Santa Monica with their partners, as well as guests such as Gilles Marini, AnnaSophia Robb, Amy Smart, Anthony Mackie and Wilmer Valderrama.Alanis Morissette and Zachary Quinto at Kiehl’s store in Santa MonicaCredit/Copyright: John Shearer/InvisionKiehl’s partners have each designed a Limited Edition label, depicting their vision of social responsibility for our 4.2 oz. Ultra Facial Cream, which is now available in Kiehl’s stores and on Kiehls.com. 100% of the net proceeds of this series will benefit Recycle Across America (RAA), and through this program, Kiehl’s will be donating $50,000 to the organization. RAA is not-for-profit organization dedicated to delivering society-wide solutions that eliminate public confusion, stimulate the environmental economy and expedite progress, and the funds raised from these labels will be used to create 65,000 standardized recycling labels, which will be donated to K-12 schools nationwide.Video: Zachary Quinto for Earth DayEarth Month for Kiehl’s is also the time to reinforce Recycle and Be Rewarded! in-store recycling program. This ongoing program is available only in Kiehl’s free-standing stores nationwide, and allows their customers to return their empty Kiehl’s bottles, tubes and jars for recycling, in exchange for product. They have just passed the 1 Million mark, of the number of Kiehl’s empties that they’ve recycled in their stores!Video: Alanis Morissette for Earth Daylast_img read more

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Village of Rycroft remains on Boil Water Advisory and State of Local

first_imgRYCROFT, AB – The water main has been repaired and the water distribution system has re-opened yet the Boil Water Advisory and State of Local Emergency remains in effect.Posted to the Village of Rycroft’s FB Page;PRESS RELEASE #12March 6, 2019 – 9:10 a.m. Yesterday evening the break in the water main was repaired and the water distribution system was re-opened. Residents should now have water service.DO NOT DRINK THE WATER.The BOIL WATER ADVISORY will remain in effect until such time as the laboratory results verify it is safe to consume.The State of Local Emergency remains in effect.Please note:Now that the water distribution system is re-activated, most water lines will contain some air and water discoloration when opened. This is normal. Open taps SLOWLY and the regular steady flow will soon occur.last_img read more

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