EditorialAn infrared image provided by NASA and captured by the Spitzer Space Telescope in 2008 shows Messier 101, or the Pinwheel Galaxy, which is 170,000 light-years across and twice the diameter of the Milky Way. (NASA/JPL via The New York Times)
EditorialAn infrared image provided by NASA and captured by the Spitzer Space Telescope in 2008 shows Messier 101, or the Pinwheel Galaxy, which is 170,000 light-years across and twice the diameter of the Milky Way. (NASA/JPL via The New York Times)