Eleven was now the outermost moon.
Garner and Anderson were on a ten-hour path to Nereid, Neptune's outermost moon.
They had moved inside the outermost moons when Bill reported another odd feature.
T,le frontier that Sirius was crossing now was a purely arbitrary one: the orbit of the outermost moon.
It has full aerial capability, has been checked out for orbital use, and could no doubt reach the outermost moon at need.
Scientists have already had their appetites for discovery whetted by the spacecraft's close pass of Phoebe, the planet's outermost moon.
Jon could feel in those slow, painful dissonances the eons-old surface of the cracked and cratered outermost moon.
Hi'iaka, which is about 350 km in diameter, is the largest and outermost moon, has large amounts of ice on its surface.
S/2003 J 2 is the outermost moon of Jupiter, and is not part of a known family.
For more than 100 years, Phoebe was Saturn's outermost known moon, until the discovery of several smaller moons in 2000.