In what I'm sure is an April fools joke my adsense dashboard is telling me that my earnings are out of this world. In the section usually reserved for "countries" I now see earnings from various planets and moons.
"Top Planets and Moons" is the heading and I'm doing rather well on Europa, as well as the moon and on Mars.
While only a gag perhaps one day we will actually have earnings from these places, who knows.