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Although NASA's Kepler space telescope ran out of fuel and ended its mission in 2018, citizen scientists have used its data to discover an exoplanet 226 light-years away in the Taurus constellation.The exoplanet, known as K2-288Bb, is about twice the size of Earth and orbits within the habitable zone of its star, meaning liquid water may exist on its surface. It's difficult to tell whether the planet is rocky like Earth or a gas giant like Neptune.The planet is in the K2-288 system, which contains a pair of dim, cool M-type stars that are 5.1 billion miles apart, about six times the distance between Saturn and the sun. The brightest of the two stars is half as massive as our sun, and the other star is one-third of the sun's mass. K2-288Bb orbits the smaller, dimmer star, completing a full orbit every 31.3 days.K2-288Bb is half the size of Neptune or 1.9 times the size of Earth, placing it in the "Fulton gap" between 1.5 and two times the size of Earth. This is a rare size of exoplanet that makes it perfect for studying planetary evolution because so few have been found.The discovery was announced Monday at the 233rd meeting of the American Astronomical Society in Seattle."It's a very exciting discovery due to how it was found, its temperate orbit and because planets of this size seem to be relatively uncommon," said Adina Feinstein, a University of Chicago graduate student in astrophysics and lead author of a paper describing the new planet that was accepted for publication by The Astronomical Journal.Although all of the data from the Kepler mission was run through an algorithm to determine potential planet candidates, visual manpower was needed to actually look at the possible planet transits -- or dip in light when a planet passes in front of its star -- in the light curve data. Kepler observed other events that could be mistaken for planet transits by a computer.But the "reboot" of the Kepler mission in 2014 that led to the K2 mission allowed for multiple observation campaigns that brought in even more data. Every three months, Kepler would stare at a different patch of sky."Reorienting Kepler relative to the Sun caused miniscule changes in the shape of the telescope and the temperature of the electronics, which inevitably affected Kepler's sensitive measurements in the first days of each campaign," said study co-author Geert Barentsen, an astrophysicist at NASA's Ames Research Center, in a statement.Those first three days of data were ignored, and errors were corrected in the rest of the data gathered.But the scientists couldn't do it alone. There were too many light curves to study on their own.So the reprocessed, "cleaned-up" light curves were uploaded through the 2731

A whistleblower's complaint about President Donald Trump's communications with Ukraine was hand delivered Wednesday afternoon to Capitol Hill for lawmakers to review.Sen. Richard Burr, the Republican chairman of the Senate Intelligence Committee, said he has started to read the document but declined to give his initial thoughts.Members of the Democratic-led House Intelligence Committee are also reviewing the documents.The move comes just hours after the White House released a transcript of a July 25 phone call that shows the President repeatedly pressed the leader of Ukraine to investigate former Vice President Joe Biden and his son.It also comes a day after House Speaker Nancy Pelosi declared the President had betrayed his oath of office and announced she is opening a formal impeachment inquiry.The conversation between Trump and Ukrainian President Volodymyr Zelensky is included in the whistleblower complaint, a source familiar with the situation said last week, a revelation only raised more questions in the ongoing controversy.Trump has downplayed the significance of the complaint, claiming the whistleblower is partisan and his conversations with foreign leaders are "appropriate."The intelligence community inspector general last week suggested that the whistleblower complaint that triggered the Ukraine-Trump drama, raised concerns about multiple actions, sources told CNN.However, the inspector general -- who spoke at a closed-door briefing last week -- would not say if those instances involved Trump, the sources said.One source said that Inspector General Michael Atkinson referenced "a sequence of events" and "alleged actions" that took place. However, another source disputed that the IG provided substantive details regarding the whistleblower claim. 1794

After serving nearly 28 years in prison, a Philadelphia man was freed after authorities publicly acknowledged that police and prosecutors had evidence that pointed to other suspects.Chester Hollman III, 48, was released Monday from a state prison in Luzerne County, Pennsylvania. Philadelphia Common Pleas Court Judge Gwendolyn N. Bright had ruled that Hollman was "likely innocent" of the 1991 killing of Tae Jung Ho."I don't think it's really hit me yet still. Just this morning, I learned that this was happening. I'm still a little in shock, disbelief," Hollman told 582

A quick burst of snow will blanket parts of the United States on Sunday, with more than 80 million people under winter weather alerts from Colorado to Maine.The storm began developing Saturday and brought snow to the Central Plains, and is expected to bring rain, snow or a wintery mix to much of the eastern United States.Snow had already started falling in the Midwest by early morning Sunday. It will move into the Ohio River Valley by midday then to the East in the afternoon and the overnight hours, CNN meteorologist Haley Brink said.New York, Philadelphia, and Boston will get rain Sunday afternoon and transition to a wintry mix of snow by evening. New York will get between 4-8 inches while Boston is expecting 5-10. Philadelphia will get 2-4 inches."The system is currently forecast to move out of DC, Philadelphia and New York between midnight and 4 a.m.," Brink said. "Boston may have the worst commute as their snow will last through the morning rush hour."By Monday afternoon, the storm will move out of the Northeast, Brink said.Moving EastKansas and Missouri are expecting 2 to 4 inches of snow, and the Ohio River Valley is predicted to get up to 2 inches, according to Brink.This season has seen unusually high amounts of snowfall in many regions. Caribou, Maine was just shy of its record snowfall from the winter season 2007-2008 as of Saturday. Other areas already exceeding normal snow accumulations include Buffalo, NY, and Burlington, Vermont.Severe weather in the SouthAcross the Southeast, 14 million people are expected to see severe weather, Brink said.NWS predicts scattered tornadoes and gusts of wind in most of Central Georgia and parts of North Georgia on Sunday.Southern and eastern Alabama could also see tornadoes Sunday, Brink said. 1782

A shaky cell phone video captured the moments before a Texas police officer shot and killed a woman who claimed she was pregnant.Now people on social media are divided over whether the shooting was justified.The officer was patrolling an apartment complex in the Houston suburb of Baytown late Monday when he saw a woman he knew from previous encounters, Baytown police said.A family member identified the woman as Pamela Shantay Turner. In a text message Tuesday, police Lt. Steve Dorris said Turner was not pregnant.The officer knew the 45-year-old woman had outstanding warrants and started trying to arrest her, police said.A witness' cell phone video showed the woman yelling at the officer:"I'm walking! I'm actually walking to my house!" the woman screams at him. She later says the officer is "harassing" her.The video shows the officer apparently trying to handcuff the woman, but she breaks free. The officer then fires his Taser stun gun, and the woman slowly drops to the ground. 1003