http://www.universetoday.com/127390/out-of-this-world-valentines/The staff at the New Horizons mission headquarters offers two valentines this season that play off Pluto’s heart-shaped, icy plain Tombaugh Regio. While the temperature there hovers around 400 below, you’re guaranteed a 98.6° smile when your sweetie opens the card and sees your love reflected in glittering nitrogen ice.
Mars has a lot of heart (s)! Click to select and send your Valentine a Red Planet-themed e-card. Credit: NASA
