by Scott Mainwaring, Vexilloid Tabloid #53
On 13 July the New Horizons probe sent an image of Pluto dominated by Tombaugh Regio, a large feature informally called “the heart”.

Inspired, I created a flag for Pluto: its astrological symbol in orange-brown (its overall color), in a white heart, on black (for space).

I chose the astrological over the astronomical symbol (♇) as its symmetry makes it more flag-friendly. The aspect ratio of 1:1 is the closest a rectangle can come to the circular shape of the (dwarf) planet; and distinguishes it from standard terrestrial flags.
Stickers, hats, and other products with this design are for sale on Zazzle.com.