These three Lego figures (made out of aluminum) traveled on an unmanned NASA probe to the planet Jupiter. The probe was launched in 2011, and after five years, it finally reached Jupiter this year; if all goes well, it will be orbiting the planet until a planned crash landing in 2018. You can read more about the Juno Probe at Wikipedia, and you can follow the mission at Twitter!
This image shows just Jupiter and Juno; he holds a lightning bolt, while Juno has a magnifying glass, which, as NASA explains, symbolizes her search for truth:
