NASA successfully landed "Curiosity", an exploratory rover, on the surface of Mars on 6th August 2012 after a journey of more than half a year. One of the interesting bits about its design is that it has larger wheels than previous rovers. The wheels also have a pattern that provides better grip with a secondary purpose of leaving tracks can be used by cameras on-board to calculate how much distance was traveled by the rover.
The pattern is Morse Code for the letters "JPL". Why JPL?
[+ Show Answer]
"JPL" is short for "Jet Propulsion Laboratory", the NASA Lab that built the rover.
This day last year: Q.312