Callisto: Dark Smashed Iceball
Explanation:
Callisto is a dirty battered world, showing the most beaten surface of
Jupiter's major moons. Made of a rocky core
covered by fractured ice,
Callisto's past collisions with large meteors are evident as large
craters surrounded by concentric rings. The four largest moons of Jupiter:
Io,
Europa,
Ganymede, and
Callisto were all discovered by
Galileo
and
Marius in 1610 with early telescopes and are now known as the
Galilean satellites. The
NASA spacecraft Galileo
is scheduled to arrive at Jupiter is December of 1995.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.
