A Valentine from Earth. pic.twitter.com/7FEIIddAJB — Karen L. Nyberg (@AstroKarenN) February 14, 2014 While we’re unsure about the status of chocolates and flowers in locations far beyond Earth, there certainly is no lack of hearts for us to look at to enjoy Valentine’s Day. If you look at enough geologic features or gas clouds, statistically … Continue reading "For Valentine’s Day, Enjoy These Hearts On Earth, Mars And Other Places"