Earth and Moon, December 1968, photographed during the Apollo 8 mission. 

(NASA)

Path of the Moon around the Sun, 19th century.

I hope life on earth is everything you remember it to be.

Enceladus' underground oceans (tiger stripes) spew ice into space, creating Saturn’s E-ring.

Blue Moon

A Blue Moon is when there are two full moons in one month (31 July 2015 is a blue moon day)

Lunar quarters

Beautiful art depicting the command and lunar modules.

A glorious future of lunar exploration depicted in 1950s works by Paul A. Hardy.

(Astro Art)