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COLUMBIA, Md., Aug. 4, 2020 /PRNewswire/ --As Carl Sagan famously said, "We're made of star stuff" but how do stars distribute their essential "stuff" for life into space? NASA's telescope on an airplane, SOFIA, is finding some answers by watching pulsating stars as they expand and contract, almost like beating hearts. The Stratospheric Observatory for Infrared Astronomy, SOFIA,examined several types of pulsating stars in our Milky Way galaxy, watching as somespewed carbon,into interstellar space.Carbon is created deep inside stars through the process of helium fusion. As stars evolve, this carbon can get dredged up to the surface. But it must be forced into space for it to become a building block of life as we know it. SOFIA found that some Mira stars, late-stage red giants with especially powerful pulsations, can drive strong stellar winds that eject carbon-rich gas and dust out into interstellar space. On the other hand, stars with much weaker pulsations called semiregular stars, can't push the wind out as effectively. The Mira Stars are therefore responsible for distributing large amounts of carbon into the universe.The research was published in The Astrophysical Journal. "We know that essential chemicals like carbon come from stars," said Kathleen Kraemer, a scientist at Boston College and lead author of the study. "But these strong pulsations help explain how carbon moves away from stars to where it can evolve into more complex structures, which in the case of Earth, ultimately became DNA life." Previous research observed pulsating stars in other galaxies, like the Large Magellanic Cloud, but this research with SOFIA provides new insights into how carbon gets distributed in our own Milky Way galaxy. For more information see:https://iopscience.iop.org/article/10.3847/1538-4357/ab4f6b ABOUT SOFIA SOFIA, the Stratospheric Observatory for Infrared Astronomy, is a Boeing 747SP jetliner modified to carry a 106-inch diameter telescope. It is a joint project of NASA and the German Aerospace Center, DLR. NASA's Ames Research Center in California's Silicon Valley manages the SOFIA program, science and mission operations in cooperation with the Universities Space Research Association headquartered in Columbia, Maryland, and the German SOFIA Institute (DSI) at the University of Stuttgart. The aircraft is maintained and operated from NASA's Armstrong Flight Research Center Building 703, in Palmdale, California. PR Contact:Suraiya Farukhi, Ph.D.[emailprotected] 410-740-6224; 443-812-6945 SOURCE Universities Space Research Association Related Links http://www.usra.edu

Answer: Stellar Pulsations Distribute Key Ingredient for Life