Challenge your observation skills with an optical illusion that hides a smiley face among a treasure box, a magic lamp, and ...

From friendly smiley faces to cheeky peaches ... and a splatter - as well as a face with bags under its eyes. While users ...

A 'smiley face' has been discovered on the surface of ... The face is made up of two crater 'eyes' and ancient salt deposits. The image was taken by the European Space Agency's (ESA) ExoMars ...