Jump into space with Nasa's photo of the day, simply type:
>>> inspace
it will fetch the image of the day from Nasa's website and will make it your desktop wallpaper.
if you want a random pic from the last N years you can sepcify this using:
>>> inspace -r 1.5
if you want a pic from a specific date you can use this:
>>> inspace -d YYMMDD
>>> # 2016 April 03
>>> inspace -d 160403