- Look up
planetary in Wiktionary, the free dictionary.
Planetary means relating to a
planet or planets. It can also
refer to:
Planetary habitability, the...
- A
planetary nebula is a type of
emission nebula consisting of an expanding,
glowing s**** of
ionized gas
ejected from red
giant stars late in
their lives...
-
Planetary science (or more rarely, planetology) is the
scientific study of
planets (including Earth),
celestial bodies (such as moons, asteroids, comets)...
-
Planetary habitability is the
measure of a planet's or a
natural satellite's
potential to
develop and
sustain an
environment hospitable to life. Life...
- An
epicyclic gear
train (also
known as a
planetary ge****t) is a gear
reduction ****embly
consisting of two
gears mounted so that the
center of one gear...
-
Planetary romance (other
synonyms are
sword and planet, and
planetary adventure) is a
subgenre of
science fiction or
science fantasy in
which the bulk...
-
Planetary consciousness is the idea that
human beings are
members of a
planetary society of
Earth as much as they are
members of
their nations, provinces...
- A
planetary system is a set of
gravitationally bound non-stellar
bodies in or out of
orbit around a star or star system.
Generally speaking,
systems with...
- A
planetary-m****
object (PMO), planemo, or
planetary body (sometimes
referred to as a world) is, by
geophysical definition of
celestial objects, any celestial...
- The
planetary hours are an
ancient system in
which one of the
seven classical planets is
given rulership over each day and
various parts of the day. Developed...
