Browse by Category
Galaxies Grow from Inside Out
Mission: Galaxy Evolution Explorer (GALEX), Wide-field Infrared Survey Explorer (WISE)Spacecraft: GALEX Orbiter, WISEInstrument: GALEX Telescope, WISE Telescope Size: 1302 x 818
Evidence from NASA's Wide-field Infrared Survey Explorer and Galaxy Evolution Explorer missions provide support for the 'inside-out' theory of galaxy evolution, which holds that star formation starts at the core of the galaxy and spreads outward.
Full-Res TIFF: Download, Full-Res JPEG: Download