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Runaway stars leave infrared waves in space

6 January 2016 Astronomy Now

Astronomers are finding dozens of massive, so-called ‘runaway stars’ in our galaxy with the help of images from NASA’s Spitzer Space Telescope and Wide-field Infrared Survey Explorer, or WISE. When these speedy, massive stars plow through space, they can cause material to stack up in front of them, creating dramatic arc-shaped features called bow shocks.