1,000-Light-Year-Wide Local Bubble is Responsible for Formation of All Nearby, Young Stars astronomy space science
Space Telescope Science Institute astronomer and data visualization expert Dr. Catherine Zucker and her colleagues have shown how a chain of events beginning 14 million years ago with a set of powerful supernovae led to the creation of the vast Local Bubble, responsible for the formation of all young stars within 500 light-years of the Sun.
“Statistically, it is very unlikely that the Sun would be centered in a giant bubble if such bubbles were rare in our Milky Way Galaxy.” The expansion speed of the Local Bubble, as well as the past and present trajectories of the young stars forming on its surface, were derived using data obtained by ESA’s Gaia star-mapping sattelite.“We can piece together the history of star formation around us using a wide variety of independent clues: supernova models, stellar motions and exquisite new 3D maps of the material surrounding the Local Bubble.
France Dernières Nouvelles, France Actualités
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