1.   Ember, thumping down from the sunflower against the bitter chocolate of the Martian sky.

2.   The same materials, thrown into the Martian atmosphere by strong winds, give the Martian sky a pinkish color.

3.   Something as exotic as a meteor streaking through the Martian sky could announce its invasion with a sonic boom.

4.   The sundial is partly intended to enable space enthusiasts to track the hours and seasons as the sun moves around the Martian sky.