Fermi Paradox: Student Art

The physicist Enrico Fermi was prompted to pose the question we now refer to as the Fermi Paradox by this 1950 Alan Dunn New Yorker Magazine cartoon showing space aliens stealing trash cans from New York City.  Here is the original drawing upper left alongside some updated versions by 6th Grade Science students from San Anselmo California.  I really like the drawing in the lower left as it show a raccoon in one of the stolen trash cans.  HELP!