44 ASTRONOMY • FEBRUARY 2018Michael Carroll and Rosaly Lopes
visit Antarctica to learn what
the frigid continent can tell
scientists about icy moons.
ENCELADUS ON EARTH
The U.S. McMurdo Station is the largest outpost in Antarctica.
The helipad, shared by McMurdo and New Zealand’s Scott Base,
is in the lower left foreground. Mount Erebus rises 12,448 feet
(3,794 m) in the right background. MICHAEL CARROLL