'Herculean' 2.5-billion-pixel mosaic shows our closest galactic neighbor like never before — and took more than a decade to create
Space.com   a day ago
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'Herculean' 2.5-billion-pixel mosaic shows our closest galactic neighbor like never before — and took more than a decade to create  Livescience.com'Enticing empire of stars:' See Andromeda galaxy in newly released NASA images  USA TODAYHubble Takes...