July 21, 2016
Lang, an astronomer at the University of Toronto’s Dunlap Institute, had been mapping out galaxies thanks to data from WISE, NASA’s Wide-field Infrared Survey Explorer. NASA launched the spacecraft in 2009, and by 2011, WISE had scanned the sky with infrared light twice over. All told, within WISE’s data sit some 750 million stars, asteroids, galaxies and other heavenly objects. Read more.