These findings suggest the young sun may have also blasted out giant coronal mass ejections that could in turn have influenced the early Earth. Future research should employ a range of telescopes in order to investigate the later phases of coronal mass ejections around other stars, he said. Notsu noted that the team was only able to catch the initial phase of the coronal mass ejection, so it remains uncertain whether it fell back onto the star or got ejected into space.
What's inside the sun? A star tour from the inside out 'Superflares' may make it hard for life to begin around dwarf stars Watch the sun fire off huge solar flares in this mesmerizing NASA video "This is the first detection of a possible coronal mass ejection from a solar-type star," Notsu told. They estimated its mass to be 10 times bigger than that of the largest known solar coronal mass ejection. On April 5, 2020, the research team's hunch paid off - the scientists detected a superflare that was followed about 30 minutes later by what appeared to be a coronal mass ejection moving at about 1.1 million mph (1.8 million kph). In the new study, the scientists observed EK Draconis from January to April 2020 using NASA's Transiting Exoplanet Survey Satellite, Kyoto University's Seimei telescope and the Nishi-Harima Astronomical Observatory's Nayuta telescope. Prior work found that EK Draconis often erupted with flares, which suggested that astronomers monitoring it could get lucky in the hunt for superflares and giant coronal mass ejections. "It's what our sun looked like 4.5 billion years ago," Notsu said in the statement. EK Draconis is a yellow dwarf like the sun, but is much younger at only 50 million to 125 million years old. In the new study, the researchers analyzed EK Draconis, a star located about 111 light-years from Earth. "Coronal mass ejections are the most important aspect when it comes to considering the effects of superflares on planets, especially our Earth," Notsu told. Superflares could theoretically blast out equally super coronal mass ejections much more powerful than any produced by our sun, but until now astronomers had not seen any evidence that was true. Previous research found that distant yellow dwarf stars could erupt with " superflares ," outbursts packing 10 times more energy than the largest known solar flares. "Coronal mass ejections can have a serious impact on Earth and human society," study co-author Yuta Notsu, an astrophysicist at the University of Colorado Boulder, said in a statement (opens in new tab).
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