ccdphtsv

Northern BC High School Rodeo Association members in South Dakota for National Junior Finals

By on January 12, 2020

first_imgFor up-to-date standings and results, you can visit the National High School Rodeo Association’s website. FORT ST. JOHN, B.C. – Three members of the Northern B.C. High School Rodeo Association are currently in Huron, South Dakota for the 2019 National Junior High School Finals Rodeo.The three local participants include Cashlyn Callison, Fallon Jones, and Korbin Mills.On Sunday, Mills took part in the Breakaway Roping event but was unable to record a time. Then on Monday, he participated in the second performance of Goat Tying where he managed to place 18th with a time of 15.27 seconds.- Advertisement -So far, Jones is having a difficult start to the Finals as she could not manage to record a time on Sunday in Goat Tying or record a time on Monday in Breakaway Roping.Callison will be taking part in the Pole Bending event on Monday night.The 2019 National Junior High School Finals Rodeo is taking place June 23 to the 29 in Huron, South Dakota.Advertisementlast_img read more

Continue Reading

ccdphtsv

Catalina fire steered away from town; nearly 4,000 evacuees set to return

By on January 11, 2020

first_img 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AVALON, Calif. (AP) — Water-dumping planes and helicopters helped beat back soaring flames that threatened this quaint Catalina Island town Friday, giving firefighters a victory that allowed nearly 4,000 evacuated residents to start coming home. Even though the six-square-mile blaze was only 10 percent contained, the wildfire and thick smoke was confined to the tinder-dry brush in the mountains of this narrow island 30 miles off Los Angeles. Avalon’s cobblestone streets, brightly painted bungalows, landmark casino and tourist hotels were mostly spared, with only one home and several outbuildings burned. No one was seriously injured. “Thank goodness the firefighters did get here because that made the difference,” said Martha Ashleigh, 61, who has lived on Catalina on and off for years. “We were watching from our balcony and we could just see truck after truck go up there. They were just fabulous.” A day earlier, flames bore down from the mountains, raining ash and chaos on the crescent harbor. Evacuated residents clambered onto ferries that passed U.S. Navy hovercrafts packed with fire trucks from the mainland. Many were workers who cook and clean for vacationers. Others were at vacation homes as the summer tourist season geared up. “It’s like a war zone. The skies turned completely gray with orange streaks. The helicopters were flying all over the place,” said Anita Bussing, a therapist whose other home is in Long Beach. “People were freaking out, children were crying.” By Friday afternoon, one ferry full of residents was headed back to the island on from Long Beach, and a relay of water-carrying helicopters saturated a hillside at the edge of town where smoke curled into the blue sky. The step appeared intended to extinguish any lingering hot spots. The cause of the fire, which erupted Thursday afternoon in the 76-square-mile island’s rugged interior, had not yet been determined. The island’s relative isolation has proven a liability before. A 1915 fire that started in a hotel burned half the town’s buildings. The island’s romantic vibe was memorialized in the 1958 hit “26 Miles (Santa Catalina).” Before private jets and third homes became standard fare for the rich and really famous, Santa Catalina was a celebrity haunt for the likes of Theodore Roosevelt, Winston Churchill and Cecil B. DeMille. About 300 movies have been shot on the island or in nearby waters, including “Mutiny on the Bounty,” “Chinatown,” “Jaws” and “Apollo 13.” One relic of that era are the herds of bison that were brought over for filming and later released. Environmentalists said it was too early to tell how the blaze affected the island’s overall ecosystem, home to rare animal and plant life, including the Catalina Island fox. But four bald eaglets that hatched earlier this year without human help were unharmed, according to Bob Rhein, a spokesman for the Catalina Island Conservancy which owns most of the island. The eagles were wiped out decades ago by chemical contamination. Just days before and about 50 miles away on the mainland, crews beat back flames in Los Angeles’ major park that singed a neighborhood of multimillion-dollar homes. That was the third menacing fire in the Hollywood Hills this spring — and wildfire season here isn’t supposed to heat up until the fall. Around the country, firefighters battled a wildfire in Georgia and northern Florida that burned 179,940 acres — or 281 square miles — since a lightning strike ignited it a week ago. The fire, which started last Saturday in the middle of the Okefenokee National Wildlife Refuge, took just six days to grow larger than a wildfire that has burned 116,480 acres of Georgia forest and swampland over more than three weeks. In Georgia, the fire posed a potential threat to the tiny city of Fargo, where 380 people live about eight miles west of the Okefenokee Swamp. No evacuations had been ordered Friday. About 570 homes in northern Columbia County, Fla., were evacuated overnight, and heavy smoke blanketed the area. A haze was seen in Miami, more than 300 miles away. To the north, a wildfire grew to nearly 86 square miles in northeastern Minnesota and across the border into Canada, cutting power and phone lines to many resorts and lake homes. The fire, driven by high wind Thursday and fed by drought-parched forest, has already destroyed 45 structures and was threatening about 200 more. The chance of desperately needed rainfall was still days away.— Associated Press writers Jeff Wilson and Robert Jablon in Los Angeles, Peter Prengaman in Long Beach and Andrew Glazer in Avalon contributed to this report.last_img read more

Continue Reading

ccdphtsv

Atletico face Champions League knockout

By on January 10, 2020

first_imgInspired by coach Diego Simeone, Atletico have twice reached the final, as well as the semis and quarters in the Champions League over the past four seasons – only to fall to cross city rivals Real Madrid on every occasion.On top of a 310 million euro ($360 million) outlay on their new home, Atletico made a huge economic effort to make their transition from the Vicente Calderon as smooth as possible despite a FIFA ban on registering new players.Simeone and key figures such as Antoine Griezmann, Saul Niguez and Koke were handed lucrative new contracts.Diego Costa also rejoined the club for a reported club record 55 million euros ($64.8 million) from Chelsea, but he and Atletico’s other major recruit Vitolo can’t feature until January.However, the gamble that Costa and Vitolo would provide the perfect boost to Atletico’s Champions League campaign come the new year could backfire spectacularly as Simeone’s men have taken a paltry two points from their opening three Group C games.Costa’s old club Chelsea lead the way on seven points, closely followed by Roma on five.– Goal-shy Griezmann – Atletico Madrid’s top scorer Angel Correa fights for the ball with Qarabag’s Badavi Guseynov during their UEFA Champions League Group C first leg match, in Baku, on October 18, 2017 © AFP/File / TOFIK BABAYEVAtletico’s problem is painstakingly obvious, they can’t score goals.Griezmann’s penalty in 2-1 home defeat to Chelsea last month is their only Champions League goal to date and they have managed just eight in their last eight La Liga games to fall eight points off the top.“It’s the same thing as always,” Saul confessed after a 1-1 draw against third-tier Elche in the Copa del Rey.“That lack of goals makes us anxious and we end up suffering.”Top scorer for the past three seasons, Griezmann’s form has faltered with just three goals 11 matches.However, Simeone insisted the Frenchman has got Atletico into a “bad habit” of solving the team’s attacking problems single-handedly for too long.Luciano Vietto, Fernando Torres and Kevin Gameiro have all been handed their opportunity to partner Griezmann in attack and failed when presented chances in front of goal.Some have also pointed the finger at Simeone’s defensive tactics as Atletico have been punished for sitting back after taking the lead against Chelsea, Barcelona and in drawing 1-1 against Villarreal on Saturday.Atletico Madrid’s head coach Diego Simeone shouts instructions to his players during their UEFA Champions League Group C match against Chelsea, at the Metropolitan stadium in Madrid, on September 27, 2017 © AFP/File / JAVIER SORIANO“Simeone isn’t the one missing the chances,” wrote former Atletico favourite Paulo Futre in sports daily Marca on Sunday in defence of the Argentine.Griezmann, Yannick Carrasco and Torres all missed huge opportunities as Qarabag secured their first ever Champions League point in Baku two weeks ago.“Now we have a final here at home,” said Atletico’s top scorer Angel Correa, his side’s top scorer with a meagre four goals this season.“We need to be calm because the only thing we lack is luck, we are creating the chances.”Atletico’s fate remains in their own hands, but they need to be a lot more clinical if Costa is to avoid the ignominy of making his European return in the new year in the Europa League as his old club progress to the Champions League last 16.0Shares0000(Visited 1 times, 1 visits today) 0Shares0000(From L) Qarabag’s Rashad Sadygov, Atletico Madrid’s Kevin Gameiro and Antoine Griezmann compete for the ball during their UEFA Champions League Group C first leg match, in Baku, on October 18, 2017 © AFP/File / Alexander NEMENOVMADRID, Spain, Oct 30 – Finding themselves against the ropes, Atletico Madrid have to come out swinging and finally start landing punches to keep their Champions League dreams alive when Azerbaijani champions Qarabag visit the shiny new Wanda Metropolitano on Tuesday.The move to the 68,000 capacity stadium, which will host next season’s Champions League final, was seen as confirmation of Atletico’s place among the European elite.last_img read more

Continue Reading

ccdphtsv

Estrogen may be key factor in women’s lung cancer

By on December 27, 2019

first_imgWASHINGTON – Lung cancer acts differently in women than in men, and major new studies are exploring whether estrogen is a key reason – and whether harnessing the hormone might help fight the No. 1 cancer killer. The gender link may sound surprising. Ask women what cancer they worry most about, and surveys show breast cancer consistently tops the list, while lung cancer is seldom mentioned. But lung cancer is increasingly a women’s problem. It will kill more than 162,000 people this year – 72,000 of them women. Breast, ovarian, uterine and cervical cancers combined kill fewer than 72,000 women a year. While male deaths from lung cancer have been dropping since 1991, women’s death rates are stubbornly holding steady. Much of the difference is attributed to gender variations in smoking, lung cancer’s main cause. AD Quality Auto 360p 720p 1080p Top articles1/5READ MORE11 theater productions to see in Southern California this week, Dec. 27-Jan. 2But consider: Women tend to get different kinds of lung cancer than men get. While it’s unclear if women are at greater risk of developing the disease, some research suggests they may absorb more cancer-causing chemicals from cigarettes and become sick after smoking less. Among people who never smoked, more women than men are diagnosed with lung cancer. On the other hand, women tend to survive lung cancer slightly better than men do. And some of the newest lung cancer drugs, Tarceva and Iressa, seem to work more often in women. Teasing out the biology behind the gender differences could lead to improved treatment for everyone, says Dr. Kathy Albain, a lung cancer specialist at Loyola University Health System. She is heading a National Cancer Institute-funded study that is recruiting 720 newly diagnosed lung cancer patients to examine what hormones, genes or other molecular factors explain why lung cancer behaves differently in men and women, smokers and nonsmokers. “We’re learning what’s going on in the lung, and whether or not this is a real thing that can be exploited for cancer treatment,” she says. Estrogen already is a leading suspect. Researchers are just starting to explore the hormone’s role in lung cancer, cautions University of Pittsburgh pharmacologist Jill Siegfried, a pioneer in the field. But two provocative studies are getting under way: Siegfried’s research suggests estrogen may act as a fuel for lung tumors, just as it does for many breast tumors, and that blocking estrogen with the same drugs that breast cancer patients use might work in the lungs. So a 120-patient study in Pittsburgh and Los Angeles will test whether women fare better when given the anti-estrogen drug Faslodex on top of the lung cancer drug Tarceva. Why that combination? Estrogen receptors, or docking ports, in lung tumors seem to switch on a cancer growth factor that Tarceva specifically targets. The second study, involving 600 women around the country, tests an experimental drug called Xyotax that may need estrogen to work. Seattle-based Cell Therapeutics Inc. reformulated the older cancer drug Taxol. In three large studies, 45 percent of women given this new Xyotax survived lung cancer for a year, compared with just 25 percent of women given standard drugs or men given either regimen. Estrogen seems to activate an enzyme inside tumors that unlocks Xyotax’s cancer-fighting ingredient from its covering, explains Siegfried.160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!last_img read more

Continue Reading

ccdphtsv

ATHLETICS: LIFFORD 5K REPORT AND RESULTS

By on

first_imgLETTERKENNY A.C’s Patrick Brennan smashed the Lifford 5k record to win the annual road race in the border town on Friday night.Brennan led from the off and finished in a time of 14.34. He was closely followed by clubmate, Ciaran Doherty who recorded a personal best of 14.38. Pauric McKinney who had held the course record finished third in a fine time of 15.19.Ivan Toner finished seventh (16.12) while Paul McGlinchey (16.26) and Charlie Page (16.30) finished in the top fourteen. Others to catch the eye were the ever improving Garvan McCloskey (18.34), Kevin Toner who won the men’s over 60 (18.46), Lee Gildea (19.22), Paul Cosgrove (19.24), Colly O’Donnell (19.43), Richard Raymond (19.46), Eamon Patton (19.58), Irene McFadden (21.26), and Niamh McDaid (22.08).More than 165 athletes turned out for the 10th anniversary of the event including a large contingent from Foyle Valley, Inishowen and Letterkenny.For full results click herelifford5kresults2011 ATHLETICS: LIFFORD 5K REPORT AND RESULTS was last modified: June 20th, 2011 by gregShare this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)Click to print (Opens in new window) Tags:lifford 5k resultslast_img read more

Continue Reading

ccdphtsv

Prep extra

By on December 25, 2019

first_img TRIVIA QUESTION Antelope Valley sophomore quarterback Ronaiah Tuiasosopo comes from a long line of football players. Who are they? The vitals: The area’s top two teams collide, as top-ranked Notre Dame puts its 26-game winning streak on the line against No. 2 Valencia. The game will showcase two of the state’s best quarterbacks, Notre Dame’s Garrett Green and Valencia’s Michael Herrick. Today 4 Foothill League match at Vista Valencia Golf Course Girls’ golf, 1:30 p.m. The vitals: After knocking off top-ranked Valencia last week, Hart of Newhall looks to repeat its performance in the rematch. Wednesday 5 Oak Park at La Reina Girls’ volleyball, 5 p.m. The vitals: La Reina of Thousand Oaks, the 13-time Tri-Valley League champion, plays host to rival Oak Park (16-1). Thursday 6 Thousand Oaks at Agoura Girls’ tennis, 3 p.m. The vitals: Agoura, which established itself as a playoff contender in the Marmonte League with a victory over Westlake, takes on second-place Thousand Oaks. Friday 7 Flintridge Sacred Heart at Harvard-Westlake Girls’ volleyball, 5 p.m. The vitals: Top-ranked Flintridge Sacred Heart of La Canada Flintridge seeks its second consecutive victory at Mission League rival Harvard-Westlake of Studio City. Saturday 8 Kenny Staub Invitational at Crescenta Valley Park Cross country, 8:15 a.m. The vitals: The annual event goes off – one week after being postponed because of poor air quality stemming from the Topanga Fire. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREThe top 10 theme park moments of 2019 TRIVIA ANSWER Tuiasosopo’s cousin, Marques, is in the NFL with the Oakland Raiders. His father, Titus, was a star lineman and tight end at USC. His uncle, Manu – Marques’ father – played in the NFL with the 49ers and Seahawks. Another cousin, Zach, is playing for the University of Washington. And another cousin, Matt – brother of Marques and Zach – is a top prospect in the Seattle Mariners organization. DAY PLANNER This week’s must seeValencia at Notre Dame Football: Friday, 7:30 p.m. center_img RANDOM NUMBER 26 The length, in games, of the Southern Section-leading winning and losing streaks for Notre Dame of Sherman Oaks’ and Calabasas’ football teams. Notre Dame’s 21-7 victory Friday over Saugus extended its run, second-longest in the state, behind Central Catholic of Modesto (53). Calabasas’ 48-35 setback to Simi Valley prolonged its streak, second in California to McClatchy of Sacramento’s 35-game skid. THEY SAID IT “Isn’t he something? When I got the job last year, all everyone was talking about was him. He’ll shake you out of your shorts and break your ankles. You pretty much just call a play for him and sit back and enjoy watching it.” – Loyola of Los Angeles football coach Jeff Kearinon 5-foot-3 senior running back Russell Oka, who rushed for 101 of his 111 yards and two touchdowns in the second half of Loyola’s 44-29 victory Friday over Antelope Valley. last_img read more

Continue Reading

ccdphtsv

Wells declared safe to use after all

By on

first_imgSeven Whittier-area water utilities will save millions of dollars thanks to a study showing that 15 of 17 wells once threatened with closure can still be used. The utilities were facing the possibility of having to drill new wells because all 15 were within 500 feet of where reclaimed wastewater is discharged into the Rio Hondo and San Gabriel rivers. “This is real good news,” said Mike Gualtieri, general manager of La Habra Water District, which has two wells within 500 feet of the spreading grounds along the San Gabriel River. “If we had to replace them, it would cost $1 million to $1.5 million each, and that’s without purchasing the land,” Gualtieri said. However, two wells owned by the South Montebello Irrigation District could be in jeopardy. A new test is under way on those wells, which now drill for water in deeper areas, a change implemented by the district because the study seemed to show that drilling deeper can mitigate any problems, Bradbury added. After three months of the second test, the tracer hasn’t shown up, said Brian Sinclair, general manager for the irrigation district. — Mike Sprague can be reached at (562) 698-0955, Ext. 3022, or by e-mail at mike.sprague@sgvn.com.160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREThe top 10 theme park moments of 2019 The state Department of Health Services requires that water wells be more than 500 feet away from recycled water –unless it can be proven that the recycled water takes longer than than six months to travel to the wells from where it’s discharged, said Ted Johnson, chief hydrologist for the Water Replenishment District of Southern California. “The Department of Health Services believes six months is an appropriate amount of time to ensure any viruses in the water not taken out during the treatment process will be taken out by being underground long enough,” Johnson said. In 13 wells, it was found that discharged water took longer than six months to go from where it was discharged to the wells, Johnson. Those wells are owned by California Water Service, La Habra Heights Water District, Montebello Land and Water Co., the city of Pico Rivera, the Pico Water District and the San Gabriel Valley Water Co. A tracer — a safe inert gas known as sulfur hexafluoride –was placed in the water to determine how long the water travels, Johnson said. In four of the wells, the water took less than six months. But two of those wells are located north and uphill of where the recycled water is discharged. Thus, the recycled water could never reach them, said Ken Bradbury, general manager for Montebello Land and Water Co., which owns the two wells.last_img read more

Continue Reading

ccdphtsv

UPL: URA host Mbarara City at Namboole

By on December 22, 2019

first_img Tags: Mbarara Cuty FCPaul Nkatasam simbwaURA FC URA have won two games so far this season. (PHOTO/URA FC)Uganda Premier LeagueURA vs Mbarara CityMandela National Stadium@4pmURA FC host Mbarara City FC in the Star Times Uganda Premier league at the Mandela National Stadium on Saturday.Despite both sides being on a poor run of form, URA head into the game off the back of their big win away at the Green light stadium, where they edged Onduparaka 2-1. They will be hoping they can build on it positively on when they meet.Mbarara head coach Paul Nkata started his debut at the Ankole lions in impressive style, with a 2-1 win over Busoga United, but the tactician has failed to ensure victory since, losing back to back in the league against Wakiso Giants and Maroons.Sam Ssimbwa’s charges are also not faring any different, as they have only managed eight goals.Team NewsMbarara will rely on Paul Mucureezi, Brian Ahebwa, Ibrahim Orit, Ivan Eyam and Jude Semugabi if there to go passed URASam Simbwa will hope that Cromwell Rwothomio who scored twice as they defeated Onduparaka does the same against Mbarara City. He will also rely on the services of Shafic Kagimu and Saidi KyeyuneMatch FactsThe tax collectors and the Ankole lions have met five times previously with the Ankole Lions wining once and the all other four ending in stalemates.URA is currently 11th with nine points from seven games whereas the Ankole lions are placed 12thhaving collected just eight points from eight outings.Comments last_img read more

Continue Reading

ccdphtsv

Raiders talking with Tottenham about playing in London

By on December 20, 2019

first_imgThe Raiders, who take on the Chiefs in … Click HERE if you’re unable to view the gallery on your mobile device.The Raiders, seemingly serious about not spending another season in Oakland, are reportedly considering sharing a stadium with a Premier League soccer team in London in 2019.The Daily Mail reported Sunday talks are ongoing between the Raiders and the Tottenham Hotspur to allow the Raiders to play their entire 8-game home schedule at the soccer club’s new stadium in North London.last_img read more

Continue Reading

ccdphtsv

The star that exploded at the dawn of time

By on December 3, 2019

first_imgTo probe the dawn of time, astronomers usually peer far away; but now they’ve made a notable discovery close to home. An ancient star a mere thousand light-years from Earth bears chemical elements that may have been forged by the death of a star that was both extremely massive and one of the first to arise after the big bang. If confirmed, the finding means that some of the universe’s first stars were so massive they died in exceptionally violent explosions that altered the growth of early galaxies.Theorists have long suspected that the universe’s very first stars were massive, because early gas clouds favored the formation of heavy stars. The big bang produced only hydrogen, helium, and a little lithium, and gas clouds containing only these elements can’t cool. Cooling requires heavier elements that didn’t exist then. When clouds cool, they split into smaller parts and collapse, forming smaller stars. Because the primordial gas clouds stayed warm, more gravity was needed to overwhelm the gas pressure and make them collapse, so they spawned massive stars. And some of these brilliant stars, those born 140 to 300 times as massive as the sun, exploded in a way unseen in the Milky Way today.Wako Aoki, an astronomer at the National Astronomical Observatory of Japan in Tokyo, and his colleagues have discovered a star bearing signs of just such an explosion, they report online today in Science. “This is a unique example,” Aoki says. They saw that the star has a high abundance of elements with even atomic numbers compared with odd ones. “We were very surprised by the chemical composition,” he says.Sign up for our daily newsletterGet more great content like this delivered right to you!Country *AfghanistanAland IslandsAlbaniaAlgeriaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBolivia, Plurinational State ofBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCongoCongo, The Democratic Republic of theCook IslandsCosta RicaCote D’IvoireCroatiaCubaCuraçaoCyprusCzech RepublicDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland Islands (Malvinas)Faroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and Mcdonald IslandsHoly See (Vatican City State)HondurasHong KongHungaryIcelandIndiaIndonesiaIran, Islamic Republic ofIraqIrelandIsle of ManIsraelItalyJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKorea, Democratic People’s Republic ofKorea, Republic ofKuwaitKyrgyzstanLao People’s Democratic RepublicLatviaLebanonLesothoLiberiaLibyan Arab JamahiriyaLiechtensteinLithuaniaLuxembourgMacaoMacedonia, The Former Yugoslav Republic ofMadagascarMalawiMalaysiaMaldivesMaliMaltaMartiniqueMauritaniaMauritiusMayotteMexicoMoldova, Republic ofMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorwayOmanPakistanPalestinianPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalQatarReunionRomaniaRussian FederationRWANDASaint Barthélemy Saint Helena, Ascension and Tristan da CunhaSaint Kitts and NevisSaint LuciaSaint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint Maarten (Dutch part)SlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia and the South Sandwich IslandsSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwazilandSwedenSwitzerlandSyrian Arab RepublicTaiwanTajikistanTanzania, United Republic ofThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTurks and Caicos IslandsTuvaluUgandaUkraineUnited Arab EmiratesUnited KingdomUnited StatesUruguayUzbekistanVanuatuVenezuela, Bolivarian Republic ofVietnamVirgin Islands, BritishWallis and FutunaWestern SaharaYemenZambiaZimbabweI also wish to receive emails from AAAS/Science and Science advertisers, including information on products, services and special offers which may include but are not limited to news, careers information & upcoming events.Required fields are included by an asterisk(*)His team searched for 18 chemical elements in SDSS J0018-0939, a dim orange star in the constellation Cetus that emits less light than the sun. The star belongs to the Milky Way’s stellar halo, the ancient population that surrounds the galaxy’s bright disk. Like other halo stars, it has little iron, because it arose before most of the stellar explosions that spewed the element into space.Aoki says the star likely formed from a gas cloud enriched by a pair-instability explosion, which is 10 to 100 times more violent than an ordinary supernova. Such a blast marks the death of a star so luminous that photons hold up its weight; but the star is so hot that the photons can convert themselves into pairs of electrons and antielectrons, which exert little outward pressure. So the star starts to collapse, which heats the gas, promoting more nuclear reactions, which heat the gas further, inducing yet more nuclear reactions, until the whole thing blows up. During the explosion, helium nuclei bombard one another, creating elements as heavy as nickel. Because helium is atomic number 2, elements with even atomic numbers vastly outnumber odd-numbered ones, which is exactly the pattern that Aoki’s team finds in the star in Cetus.Volker Bromm, an astronomer at the University of Texas, Austin, calls the discovery very important. “It really is a new window into star and element formation in the early universe,” he says. He adds that pair-instability explosions were so powerful they altered the growth of galaxies shortly after the big bang.”It’s always interesting to see a star with abundances like no other,” says Stan Woosley, an astronomer at the University of California, Santa Cruz. But he’s not fully convinced those abundances signify a pair-instability supernova rather than an ordinary one. To distinguish between the two, he’d like observations of additional elements.last_img read more

Continue Reading