The 13.5 Billion Year Life of a Disk Galaxy [Video]

You’ve worked all day to earn a paycheck so you can provide for yourself and the ones you love. Unless you’re incredibly lucky, you’ll most likely be doing this kind of thing for a very, very long time. An enormous portion of your life, in fact. If you want to put all of your hard work into perspective, NASA is here with this amazing computer-generated footage of the 13.5-billion-year-long (or so) lifespan of a disk galaxy. Red signifies old stars, white and bright blue signify young stars, and gas density is represented by the pale blue color.

(via NASAexplorer)

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