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(CNN) -- Scientists have discovered a "monster black hole" so massive that, in theory, it shouldn't exist.It's a stellar black hole — the type that forms after stars die, collapse, and explode. Researchers had previously believed that the size limit was no more than 20 times the mass of our sun because as these stars die, they lose most of their mass through explosions that expel matter and gas swept away by stellar winds.This theory has now been toppled by LB-1, the newly-discovered black hole. Located about 15,000 light years away, it has a mass 70 times greater than our sun, according to a press release from the Chinese Academy of Sciences.The findings were published by Chinese researchers in the journal Nature on Wednesday."Black holes of such mass should not even exist in our galaxy, according to most of the current models of stellar evolution," said Liu Jifeng, head of the team that made the discovery. "LB-1 is twice as massive as what we thought possible. Now theorists will have to take up the challenge of explaining its formation."Scientists are now scratching their heads at how LB-1 got so huge.The Chinese team has proposed a number of theories. LB-1's sheer size suggests that it "was not formed from the collapse of only one star," the study said -- instead, it could potentially be two smaller black holes orbiting each other.Another possibility is that it formed from a "fallback supernova." This is when a supernova -- the last stage of an exploding star -- ejects material during the explosion, which then falls back into the supernova, creating a black hole.This fallback formation is theoretically possible, but scientists have never been able to prove or observe it. If this is how LB-1 formed, then we may have "direct evidence for this process" for the first time, the study said.LB-1 is not the biggest black hole ever discovered -- but it may be the largest of its kind. There are several types of black holes, and stellar black holes like LB-1 are on the smaller side, according to NASA. Supermassive black holes are much bigger -- they can be billions of times the mass of our sun.Scientists believe supermassive black holes may be connected to the formation of galaxies, as they often exist at the center of the massive star systems -- but it is still not clear exactly how, or which form first.Stellar renaissanceStellar black holes are believed to be commonly scattered across the universe, but they are difficult to detect because they do not normally emit X-rays -- only doing so when they gobble up gas from a star that has ventured close enough. They are so elusive that scientists have only found, identified, and measured about two dozen stellar black holes, the press release said.The researchers at the Chinese Academy of Sciences tried a different approach. Instead of looking for X-rays emitted by black holes, the team looked for stars that were orbiting some invisible object, being pulled in by its gravity.Their efforts paid off -- they soon spotted a giant star eight times heavier than the sun, orbiting around what turned out to be LB-1."This discovery forces us to re-examine our models of how stellar-mass black holes form," said David Reitze, a physicist at the University of Florida. In May, Reitze's team made its own breakthrough discovery -- observing the never-before-seen collision of a neutron star and a black hole, which sent out ripples in space and time.These twin discoveries -- the collision, and now LB-1 -- indicate that scientists are reaching "a renaissance in our understanding of black hole astrophysics," said Reitze in the press release.There have been several other discoveries over the past year that have added to this renaissance. In October, researchers discovered what they believe to be a new type of black hole, smaller than the other kinds. And earlier this week, astronomers discovered a black hole that is actually helping baby stars grow instead of destroying them. 3971
(KGTV) — An Idaho school district is investigating a school's teachers and staff after photos surfaced on social media showing them dressed as a border wall.Photos posted to Facebook showed teachers from Middleton Heights Elementary School dressed holding cardboard painted to look like a border wall, with the phrase "Make America Great Again."In another photo, staffers dressed in sombreros, ponchos, and fake mustaches.RELATED: Olympian Shaun White apologizes for offensive Halloween costumeBoth photos, posted to Middleton Heights's Facebook page, drew scorn online, forcing the school to remove the pictures, according to KTVB.Superintendent Josh Middleton posted a video to Facebook apologizing to parents and expressing his disappointment."I was shown those photos and [was] deeply troubled by the decision by our staff members to wear those costumes that are clearly insensitive and inappropriate," Middleton said. "We are better than this. We embrace all students. We have a responsibility to teach and reach all students, period."Our time right now is going to be devoted to investigating those events and those poor decisions that were made," Middleton added.It's unclear what type of disciplinary actions the teachers and staff face. Those in the pictures were publicly identified.Police patrols were increased at the school Friday for safety, KTVB reported. About 9.5 percent of Middleton's 7,400 population is Hispanic or Latino, according to U.S. Census data. 1507

(CNN) -- The terrorist behind the 2000 attack on the USS Cole is believed to have been killed in a US airstrike in Yemen on Tuesday, according to a US administration official. Jamel Ahmed Mohammed Ali Al-Badawi was an al Qaeda operative who the US believes helped orchestrate the October 12, 2000, attack on the USS Cole that killed 17 American sailors, including San Diegan Lakiba Palmer. The official said all intelligence indicators show al-Badawi was killed in a strike in Yemen as a result of a joint US military and intelligence operation. RELATED: Community gathers to remember USS Cole bombingUS officials told CNN that the strike took place in Yemen's Ma'rib Governorate. The administration official said that al-Badawi was struck while driving alone in a vehicle and that the US assessed there was not any collateral damage. Al-Badawi was on the FBI's list of most wanted terrorists. The Cole was attacked by suicide bombers in a small boat laden with explosives while in port in Aden, Yemen, for refueling. The attack also wounded 39 sailors. The bombing was attributed to al Qaeda and foreshadowed the attack on the US less than one year later on September 11, 2001. Al-Badawi was arrested by Yemeni authorities in December of 2000 and held in connection with the Cole attack but he escaped from a prison in Yemen in April of 2003. He was recaptured by Yemeni authorities in March of 2004 but again escaped Yemeni custody in February 2006 after he and several other inmates used broomsticks and pieces of a broken fan to dig an escape tunnel that led from the prison to a nearby mosque. The State Department's Rewards for Justice Program had previously offered a reward of up to million for information leading to his arrest. Abd al Rahim al-Nashiri, an al Qaeda militant also seen as a key figure in the bombing, has been in US custody since 2002 and has been held at the detention facility in Guantanamo Bay, Cuba since 2006. US military prosecutors have charged al-Nashiri with murder for allegedly planning the attack on the USS Cole. Al-Badawi is also not the first high profile al Qaeda target that the US has killed in Yemen. US officials told CNN in August that a 2017 CIA drone strike in Yemen killed Ibrahim al-Asiri, a master al Qaeda bombmaker. Al-Asiri, a native of Saudi Arabia, was the mastermind behind the "underwear bomb" attempt to detonate on a flight above the skies of Detroit on Christmas Day in 2009. He was widely credited with perfecting miniaturized bombs with little or no metal content that could make it past some airport security screening. That ability made him a direct threat to the US, and some of his plots had come close to reaching their targets in the US. The US has sought to prevent al Qaeda from exploiting the chaos of Yemen's civil war to establish a safe haven and the US military carried out 131 airstrikes in Yemen in 2017 and conducted 36 strikes in 2018, nearly all of them targeting al Qaeda in the Arabian Peninsula, a terror group that both al-Asiri and Al-Badawi have been associated with. The CIA has not revealed how many strikes it has carried out. CIA drone strikes are not publicly acknowledged.The-CNN-Wire? & ? 2019 Cable News Network, Inc., a Time Warner Company. All rights reserved. 3272
(KGTV) - Fact: students with involved parents, no matter their income or background, are more likely to:Earn higher grades and test scores, and enroll in higher-level programsBe promoted, pass their classes and earn creditsAttend school regularlyHave better social skills, show improved behavior and adapt well to schoolGraduate and go on to post-secondary educationIs your child in a position to succeed? Are you in a position to help? Much of what you need for a positive start to the school year is available online, if you know where to look. 10News has done the navigation for you and put together this web guide for your district.District OverviewSouth Bay Union School DistrictEd-Data provides you with interactive, at-a-glance information about your district, including:Student DemographicsStudent PerformanceLocal Revenue ElectionsFinancial DataSchool Directory/District MapsClick here for a list of schools in the districtNew to the district? Click here to find your school by address.Click here to access a map of school boundaries.Bell Times/Bus InformationWhen does school start? When do classes end? And when does the bus show up? Here are the links you need, including how to get in touch with the Transportation Department.Bell times/bus schedule (contact individual schools)Transportation Services: Parent informationSchool MenusClick here for the most recently posted menus for breakfast, lunch, and snack options for each grade level.Click here for nutrition services information and FAQs, such as making special dietary requests.Parent PortalClick here for the District's main parent resource page. Turn to this website for information about important district forms, engagement opportunities, and parent FAQs.AccountabilityIs your school showing academic progress? How much is the district paying its administrators? How many discipline problems are there in the classroom? 10News has collected the data to help hold your district accountable.Transparent California: District Salary DataSchool Accountability Report Cards (SARC)Classroom Behavior/DisciplineSchool BoardThe Board of Education provides policy and financial oversight for the district.Main PageBoard Meetings and Agendas 2214
(KGTV) — A 5.5-magnitude earthquake was reported near the Ridgecrest area late Wednesday.The quake occurred at about 6:30 p.m. in the Searles Valley area, about 14 miles outside of Ridgecrest, Calif., according to the USGS. Several smaller earthquakes measuring between 2.6 and 2.9 magnitude in the nearby Trona, Calif., area were recorded after the initial shakeup. A 4.2 magnitude aftershock was also felt in the area around 8 p.m. Wednesday night. No injuries or major damage were initially reported.According to the USGS' "Did You Feel It?" map, no San Diego County responses were immediately submitted.The last major earthquakes to hit near Ridgecrest occurred on July 4 and 5, 2019, when 6.4- and 7.1-magnitude earthquakes jostled the region. 756
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