The phrase "and a moon of" is not a standard expression in written English and may be confusing without context.
It could be used in a poetic or metaphorical sense, perhaps in a creative writing context where celestial imagery is relevant.
Example: "The night sky was filled with stars, and a moon of silver light illuminated the path ahead."
Alternatives: "and a satellite of" or "and a lunar body of".
The conditions to acquire and retain a moon-of-a-moon all pose extreme difficulties when you consider how many gravitationally perturbative objects there are in these gas giant systems.
Chiron, a small body orbiting the Sun between Saturn and Uranus and believed to be a giant comet nucleus, and Phoebe, a moon of Saturn, represent somewhat smaller examples of such objects.
Now its inner surface is as barren and cratered as a moon of Jupiter, and the gallery is hanging in wobbly tatters.
Indeed, Lavery said, NASA hopes to someday dispatch robot explorers to asteroids and to Io, a moon of Jupiter, territory much too hostile and distant for humans to dream of reaching.
In these photos we're not just gazing at lunar barrens and the dunes and lakes of Titan, a moon of Saturn, but also, in a sense, looking at ourselves, turning the solar system into a mirror of human achievement.
In "Oblivion," aliens have blown up the Moon and humans have decamped to Titan, a moon of Saturn.
To be a dwarf planet under the IAU definition, the object must meet the first two conditions described above; in addition, it must not have cleared its neighbourhood, and it must not be a moon of another body.
Dr. Nelson, for example, specializes in solar system science — concerning, for example, Io, a moon of Jupiter, and Titan, a moon of Saturn — and publishes his work in scientific journals "It was an invitation to an open-ended fishing expedition," Dr. Nelson said of the background checks.
"Now we're going to go over to this place, which you can tell by the sliders has intelligent life on it, and this is actually a moon, a moon of this gas giant here.
The disturbing part is that, all this time, Russia has been concentrating on Phobos, a moon of Mars, and a number of us have recently realized just how significant that would be as a stepping stone to Mars.
