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Maybe music artist Moby was right, and “we are all made of stars.” New research suggests the calcium in our teeth and bones came from star explosions.Researchers from Northwestern University looked at a calcium-rich supernova with x-ray imaging, which provided a glimpse into the last month of the star’s life and ultimate explosion.The findings, published in The Astrophysical Journal, suggest a calcium-rich supernova is a compact star that gives off an outer layer of gas as it’s dying. When it explodes, the star’s matter collides with material, emitting bright x-rays.The explosion is so intensely hot and high pressure, it allows nuclear fusion to produce a massive amount of calcium in mere seconds. Typically, a star creates a small amount of calcium slowly by burning helium.Half the calcium in the universe likely came from calcium-rich supernovae.“These events are so few in number that we have never known what produced calcium-rich supernova,” said Wynn Jacobson-Galan, a first-year Northwestern graduate student who led the study. “By observing what this star did in its final month before it reached its critical, tumultuous end, we peered into a place previously unexplored, opening new avenues of study within transient science.”The observed explosion was named SN 2019ehk in the Messier 100 galaxy. If that sounds a little too fantasy, just know it was 55 million light years from earth.“Without this explosion, you wouldn’t know that anything was ever there,” Margutti added. “Not even Hubble could see it.”The team was able to look at images from the Hubble Telescope of the area of SN 2019ehk before the explosion to compare before and after.The researchers are working on a follow-up study that includes how the supernova is evolving after the explosion, according to statements made to CNN. 1821

MIAMI, Florida — On paper, the 40-foot wide pedestrian bridge on Florida International University's campus was an engineering feat, boasting several superlatives.Here are some, as outlined by the university: 215

Los Angeles-area protests calling for justice for an 18-year-old man shot and killed by police last week ended Sunday when police reportedly fired tear gas and rubber bullets at protesters.Video from Sunday's demonstrations shows police using chemical dispersants and shooting projectiles at protesters in Compton.One protester told CNN that the confrontation escalated into violence when a demonstrator wouldn't "back down" to police.KCBS reports that six people were arrested for unlawful assembly, and one person was charged with resisting arrest.Demonstrators were calling for justice for 18-year-old Andres Guardado, who was shot and killed by Los Angeles County Sheriff's deputies in an alley behind a Los Angeles auto shop on Thursday.Police say Guardado flashed a gun and then fled as officers chased him. CNN reports that a deputy fired six rounds at Guardado. Investigators say they recovered an unregister semi-automatic pistol at the scene that included an illegal extended magazine loaded with live rounds.Guardado's family maintains that he was working as a security guard at the body shop at the time of the shooting, and added that they do not believe he owned a gun. But police officers claim that Guardado was not recognizable as a security guard because he did not have a uniform on and was not wearing a gun belt.California law also requires that security guards be at least 21 years old.Capt. Kent Wegener, the head of the department's Homicide Bureau, says investigators have taken six or seven exterior cameras from the scene of Thursday's shooting. It's unclear if any of the footage contains images of the shooting itself.Guardado's death marked the second fatal shooting by a Los Angeles County Sheriff's deputy in a week. 1756

MIAMI, Fla. — Parts of Texas and Louisiana are bracing for Hurricane Laura, as continues to move closer to the United States as an "extremely dangerous" Category 4 storm.Earlier in the day, the National Hurricane Center (NHC) issued a dire warning, saying "little time to protect life and property."Laura is expected to deliver catastrophic storm surge, extreme winds, and flash flooding.As of the 8 p.m. ET update, Laura is about 120 miles south of Lake Charles, Louisiana, and 120 miles south-southeast of Port Arthur, Texas. Hurricane Laura is packing 150 mph winds and is moving north-northwest at 15 mph.According to the NHC, Laura will approach Upper Texas and southwest Louisiana coasts this evening and move inland within that area tonight.In a special bulletin, the NHC said winds were increasing and the hurricane was taking aim at the northwest Gulf Coast.Laura is forecast to remain a category 4 hurricane through landfall tonight.The center of Laura is forecast to move over northwestern Louisiana tomorrow, across Arkansas Thursday night, and over the mid-Mississippi Valley on Friday.NHC said the northwest Gulf Coast could see "potentially catastrophic" storm surge, extreme winds, and flash flooding Wednesday night.Unsurvivable storm surge with large and destructive waves will cause catastrophic damage from Sea Rim State Park, Texas, to Intracoastal City, Louisiana, including Calcasieu and Sabine Lakes, according to the NHC.This storm surge could penetrate up to 30 miles inland from the immediate coastline in southwestern Louisiana and far southeastern Texas.QUICK TIPS TO HELP YOU PREPARE FOR A HURRICANEWatches and Warnings:Storm Surge Warning:* Freeport Texas to the Mouth of the Mississippi RiverHurricane Warning:* San Luis Pass Texas to Intracoastal City LouisianaHurricane Watch:* East of Intracoastal City to the west of Morgan City LouisianaTropical Storm Warning:* Sargent Texas to San Luis Pass* East of Intracoastal City Louisiana to the Mouth of the Mississippi RiverStorm Surge Watch:* Mouth of the Mississippi River to Ocean Springs, Mississippi* Lake Pontchartrain, Lake Maurepas, and Lake BorgneEmily McCain with WFTS in Tampa Bay, Florida, first reported this story. 2216

Michael Cohen has asked a US judge for no prison time, citing, as he reveals in a new court filing, more details about his conversations with then-candidate Donald Trump about plans for a Trump Tower in Moscow.Cohen's attorneys argued that his cooperation with multiple investigations, including the special counsel's Russia probe, and the impact and suffering on Cohen and his family merits avoiding jail. But the filing late Friday night goes even further in tying the President to Cohen's actions.The new filing suggests in the clearest language yet the extent to which Cohen kept Trump informed of his efforts to move the project to build a Trump Tower in Moscow forward well into June 2016, including consideration of a trip to Moscow that summer, while Trump was moving closer to becoming the presumptive nominee for the Republican Party."In fact, Michael had a lengthy substantive conversation with the personal assistant to a Kremlin official following his outreach in January 2016, engaged in additional communications concerning the project as late as June 2016, and kept Client-1 apprised of these communications," the lawyers wrote. Trump is referred to as "Client-1" throughout the filing.On Friday morning, Trump defended his business dealings in a tweet, saying his dealings during the campaign were "very legal and very cool."Cohen pleaded guilty on Thursday to lying to Congress about plans to develop Trump Tower in Moscow when he told lawmakers they had ended in January 2016 and the extent of his conversations with the president, but he did not provide a lot of detail about those discussions in court.The details were part of a sentencing memo filed with the federal court in Manhattan, where Cohen will be sentenced on December 12 in two separate criminal cases. In addition to admitting he lied to Congress, Cohen pleaded guilty to eight criminal charges brought on by the US Attorney's Office for the Southern District of New York in August, including tax fraud, making false statements to a bank and campaign finance violations relating to hush-money payments made to women alleging affairs with Trump. As part of his plea deal with the US attorney's office, Cohen faces 46 to 62 months in prison.Cohen's lawyers Guy Petrillo and Amy Lester asked for the cases to be consolidated so Cohen could be sentenced for all of his crimes at once. They're also seeking leniency for Cohen, saying that he has cooperated extensively, amid intense public pressure from Trump, who has called the investigation a "witch hunt," and will agree to cooperate in the future.In the filing, his attorneys write that Cohen has had seven voluntary interviews with the special counsel and continues to make himself available as needed. Cohen's attorneys said he declined a traditional cooperation agreement because he wanted to be sentenced as scheduled so he can "begin his life virtually anew."They said Cohen is also cooperating with prosecutors from the US attorney's office "concerning an ongoing investigation," the New York state attorney general's office's civil lawsuit against the Trump Foundation and state tax authorities. CNN has previously reported that Cohen met with representatives of these offices.His lawyers note that Cohen's legal problems aren't over and he "will be named in a parallel tax case brought by New York State." The filing does not provide further details.Cohen, his lawyers say, committed the campaign finance violations and lied to Congress out of his loyalty to Trump and to stay on message even while he was preparing for his 2017 testimony to Congress."In the weeks during which his then-counsel prepared his written response to the Congressional Committees, Michael remained in close and regular contact with White House-based staff and legal counsel to Client-1," the filing says. At the time, Cohen's then attorney had a joint defense agreement with Trump's legal team.The filing doesn't go so far as to say there was coordination between Trump's legal team and Cohen on what Cohen would tell Congress, but it says the campaign finance and false statement allegations are addressed together "because both arose from Michael's fierce loyalty to Client-1. In each case, the conduct was intended to benefit Client-1, in accordance with Client-1's directives."In Cohen's cooperation agreement with the special counsel's office, it notes that Cohen will not be prosecuted for "obstructing" or conspiring to obstruct or commit perjury "before congressional or grand jury investigations."Cohen's sentencing submission also describes how Cohen's life changed following the April FBI raid on his home, office and hotel room."Nearly every professional and commercial relationship that he enjoyed, and a number of long standing friendships have vanished," it reads.Cohen, the filing says, could have "continued to hold the party line, positioning himself perhaps for a pardon or clemency," but instead, "he took responsibility for his own wrongdoing and contributed and is prepared to continue to contribute to an investigation that he views as "thoroughly legitimate and vital."Cohen, the lawyers argue, should be commended for his cooperation "in the context of this raw, full-bore attack by the most powerful person in the United States."The government will file their response to the submission next week. 5350

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