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December 20th, 2017, 01:48
Look out for the fluff!
Over the last five to 10 million years, the Solar System has been moving through the lower density region of interstellar gas of the Local Bubble. As a result, Earth and its lifeforms have avoided dangerous flows of cosmic radiation and gas. Astronomers, however, have discovered a denser cloud of interstellar gas about 25 ly (7.7 pc) in diameter called the "Local Fluff" (or "Local Interstellar Cloud") that is moving towards the Solar System. Stretched out towards Constellation Cygnus, the stellar winds of young stars in a star-forming region of the Scorpius-Centaurus Association near the Aquila Rift (a high-density molecular cloud) have been blowing the Local Fluff so that its denser parts may reach Sol's heliosphere in around 50,000 years (Straizys et al, 2003).
http://www.solstation.com/x-objects/chimney.htm
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