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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
Almost 600 plant species have been wiped from the planet in the past 250 years, more than twice the number of bird, mammal and amphibian species that have met the same fate, according to a new study.The 215
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 storm that's intensifying along the Southeast coast Monday will rapidly strengthen and move northward, delivering heavy bursts of rain, strong winds and dangerous rip currents up and down the East coast this week.This system is forecast to track across central Florida and into the Atlantic overnight Monday and into Tuesday morning. Heavy rain is forecast across much of northern Florida, with totals up to 2 inches predicted.Extreme rain in the CarolinasThis storm will quickly begin to strengthen as it tracks up and along the East coast, impacting the Carolinas Tuesday. Within a 12-hour period beginning Tuesday morning, the winds will essentially double in strength along the Carolina coast and the rain will increase as the storm deepens in its central pressure.Sustained winds will swirl at 25 to 35 mph, with gusts up to 50 mph possible along the Carolina coastline through Wednesday morning. Heavy rain and strong northeasterly winds off the coast will lead to coastal flooding, especially in flood-prone areas. Rain totals of up to 4 inches are possible.Rip currents will also be a danger along the Southeast coast Monday, where the National Weather Service has issued a Rip Current Statement from St. Simons, Georgia, south to Jupiter, Florida. The NWS says there is a high rip current risk through Monday evening and "it should be noted that almost 300 surf rescues were reported by beach authorities this past weekend."Impacts to the Northeast could be minimal or majorBy Wednesday morning this coastal low will begin to affect areas of the Northeast from Long Island to Maine. Rain and gusty winds are the main impacts along the coast, where 1-2 inches of precipitation is forecast and winds of 20-30 mph with higher gusts are possible.The impacts to the Northeast could still change, depending on how close to the coast the storm tracks. The European model has the storm tracking closer to the coast and is showing more significant effects, including higher winds and more torrential rain. New York could see wind gusts up to 25 mph Tuesday evening and up to an inch of rain. Boston could see wind gusts up to 35 mph and 1-2 inches of rain through Wednesday.The American model has the storm tracking farther off the coast, with less of an effect on coastal cities. However, the impacts over the open ocean are expected to be much more significant. Hurricane force winds are forecast 100 to 300 miles offshore due east of Hatteras, North Carolina, and Nantucket, Massachusetts. By Tuesday afternoon, offshore waves could build up to 14 to 27 feet before subsiding beginning Wednesday.This storm is a quick mover and it's forecast to exit the Northeast by Wednesday evening, leaving behind gusty winds of up to 25 mph into Thursday for areas of New England. 2785
An 8-year-old boy in Kentucky donated 165 toys to the Ludlow Police Department’s annual holiday toy drive, making sure local children in need wake up Christmas morning to presents under their trees.“I’m happy,” third-grader Braxton Gillespie, who solicited donations by posting copies of a hand-drawn flyer across town, said Friday night. “I just get to help people that don’t have stuff.”The department’s toy drive tends to run down to the wire, Chief Scott Smith said Friday night. Officers spend the early winter reaching out to local schools and identifying around 30 families that need extra help to fill out their Christmas lists, but there are always late entries. “Every year, a couple days before (Christmas), we always get some surprise families added to the list, and we always scramble,” Smith said. “Generally, the officers pay for gifts out of their pockets, so you get one guy going to buy three or four basketballs. We spend our own money to get it done.” Braxton’s donation ensures that won’t happen this year.He said he was inspired by a YouTube video about giving. His method for collecting the toys was simple. He drew a flyer reading I’m helping the Ludlow Police Department. I want to fill my mom’s van with toys to help kids to have a merry Christmas. #BraxtonMission #SpreadingCheer Thanks. He posted it around town, asking friends and family for help in the process.The donations rolled in, and the police department was stunned.“This little boy really kind of brings joy because he’s a sweet kid, and he’s doing it all on his own,” Smith said. “He was raised right.” Braxton hopes to donate twice as many toys in 2020. 1656