NASA's Spitzer Space Telescope's infrared cameras imaged the Milky Way's center to create this portrait of our galaxy. (Image credit: NASA/JPL-Caltech/S. Stolovy (Spitzer Science Center/Caltech)) An enormous supercluster made up from over 20 individual galaxy clusters hiding behind our dusty Milky Way is even larger than astronomers had thought, affecting the motion through space of all the galaxies and galaxy clusters in our corner of the cosmos. The Vela Supercluster was discovered in 2016 thanks to a team led by Renée C. Kraan-Korteweg of the University of Cape Town in South Africa. Some 870 million light-years away, it lurks close to the plane of the Milky Way . Extragalactic astronomers refer to a region behind our Milky Way as the 'Zone of Avoidance' because dust between our galaxy's stars blots out, or deeply reddens, light from more distant galaxies behind it.…