Elon Musk says he hopes to have the first humans land on Mars by 2028. ... Most recently, a test launch on May 27 resulted in the loss of both the booster and Starship spacecraft.

Besides the aforementioned smiley faces on Mars, there’s also Mickey Mouse on Mercury and the iconic Tombaugh Regio, also known as the “heart” of Pluto. The “man in the moon,” however ...