the_term_planet
term_planet_is
planet_is_ancient
is_ancient_with
ancient_with_ties
with_ties_to
ties_to_history
to_history_astrology
history_astrology_science
astrology_science_mythology
science_mythology_and
mythology_and_religion
and_religion_several
religion_several_planets
several_planets_in
planets_in_the
in_the_solar
the_solar_system
solar_system_can
system_can_be
can_be_seen
be_seen_with
seen_with_the
with_the_naked
the_naked_eye
naked_eye_these
eye_these_were
these_were_regarded
were_regarded_by
regarded_by_many
by_many_early
many_early_cultures
early_cultures_as
cultures_as_divine
as_divine_or
divine_or_as
or_as_emissaries
as_emissaries_of
emissaries_of_deities
of_deities_as
deities_as_scientific
as_scientific_knowledge
scientific_knowledge_advanced
knowledge_advanced_human
advanced_human_perception
human_perception_of
perception_of_the
of_the_planets
the_planets_changed
planets_changed_incorporating
changed_incorporating_a
incorporating_a_number
a_number_of
number_of_disparate
of_disparate_objects
disparate_objects_in
objects_in_2006
in_2006_the
2006_the_international
the_international_astronomical
international_astronomical_union
astronomical_union_iau
union_iau_officially
iau_officially_adopted
officially_adopted_a
adopted_a_resolution
a_resolution_defining
resolution_defining_planets
defining_planets_within
planets_within_the
within_the_solar
the_solar_system
solar_system_this
system_this_definition
this_definition_is
definition_is_controversial
is_controversial_because
controversial_because_it
because_it_excludes
it_excludes_many
excludes_many_objects
many_objects_of
objects_of_planetary
of_planetary_mass
planetary_mass_based
mass_based_on
based_on_where
on_where_or
where_or_what
or_what_they
what_they_orbit
they_orbit_
orbit__although
_although_eight
although_eight_of
eight_of_the
of_the_planetary
the_planetary_bodies
planetary_bodies_discovered
bodies_discovered_before
discovered_before_1950
before_1950_remain
1950_remain_"planets"
remain_"planets"_under
"planets"_under_the
under_the_modern
the_modern_definition
modern_definition_some
definition_some_celestial
some_celestial_bodies
celestial_bodies_such
bodies_such_as
such_as_ceres
as_ceres_pallas
ceres_pallas_juno
pallas_juno_and
juno_and_vesta
and_vesta_each
vesta_each_an
each_an_object
an_object_in
object_in_the
in_the_solar
the_solar_asteroid
solar_asteroid_belt
asteroid_belt_and
belt_and_pluto
and_pluto_the
pluto_the_first
the_first_trans-neptunian
first_trans-neptunian_object
trans-neptunian_object_discovered
object_discovered_that
discovered_that_were
that_were_once
were_once_considered
once_considered_planets
considered_planets_by
planets_by_the
by_the_scientific
the_scientific_community
scientific_community_are
community_are_no
are_no_longer
no_longer_viewed
longer_viewed_as
viewed_as_such
as_such_
such__the
_the_planets
the_planets_were
planets_were_thought
were_thought_by
thought_by_ptolemy
by_ptolemy_to
ptolemy_to_orbit
to_orbit_earth
orbit_earth_in
earth_in_deferent
in_deferent_and
deferent_and_epicycle
and_epicycle_motions
epicycle_motions_although
motions_although_the
although_the_idea
the_idea_that
idea_that_the
that_the_planets
the_planets_orbited
planets_orbited_the
orbited_the_sun
the_sun_had
sun_had_been
had_been_suggested
been_suggested_many
suggested_many_times
many_times_it
times_it_was
it_was_not
was_not_until
not_until_the
until_the_17th
the_17th_century
17th_century_that
century_that_this
that_this_view
this_view_was
view_was_supported
was_supported_by
supported_by_evidence
by_evidence_from
evidence_from_the
from_the_first
the_first_telescopic
first_telescopic_astronomical
telescopic_astronomical_observations
astronomical_observations_performed
observations_performed_by
performed_by_galileo
by_galileo_galilei
galileo_galilei_
galilei__at
_at_about
at_about_the
about_the_same
the_same_time
same_time_by
time_by_careful
by_careful_analysis
careful_analysis_of
analysis_of_pre-telescopic
of_pre-telescopic_observation
pre-telescopic_observation_data
observation_data_collected
data_collected_by
collected_by_tycho
by_tycho_brahe
tycho_brahe_johannes
brahe_johannes_kepler
johannes_kepler_found
kepler_found_the
found_the_planets'
the_planets'_orbits
planets'_orbits_were
orbits_were_not
were_not_circular
not_circular_but
circular_but_elliptical
but_elliptical_as
elliptical_as_observational
as_observational_tools
observational_tools_improved
tools_improved_astronomers
improved_astronomers_saw
astronomers_saw_that
saw_that_like
that_like_earth
like_earth_the
earth_the_planets
the_planets_rotated
planets_rotated_around
rotated_around_tilted
around_tilted_axes
tilted_axes_and
axes_and_some
and_some_shared
some_shared_such
shared_such_features
such_features_as
features_as_ice
as_ice_caps
ice_caps_and
caps_and_seasons
and_seasons_since
seasons_since_the
since_the_dawn
the_dawn_of
dawn_of_the
of_the_space
the_space_age
space_age_close
age_close_observation
close_observation_by
observation_by_space
by_space_probes
space_probes_has
probes_has_found
has_found_that
found_that_earth
that_earth_and
earth_and_the
and_the_other
the_other_planets
other_planets_share
planets_share_characteristics
share_characteristics_such
characteristics_such_as
such_as_volcanism
as_volcanism_hurricanes
volcanism_hurricanes_tectonics
hurricanes_tectonics_and
tectonics_and_even
and_even_hydrology
even_hydrology_
hydrology__planets
_planets_are
planets_are_generally
are_generally_divided
generally_divided_into
divided_into_two
into_two_main
two_main_types
main_types_large
types_large_low-density
large_low-density_giant
low-density_giant_planets
giant_planets_and
planets_and_smaller
and_smaller_rocky
smaller_rocky_terrestrials
rocky_terrestrials_under
terrestrials_under_iau
under_iau_definitions
iau_definitions_there
definitions_there_are
there_are_eight
are_eight_planets
eight_planets_in
planets_in_the
in_the_solar
the_solar_system
solar_system_in
system_in_order
in_order_of
order_of_increasing
of_increasing_distance
increasing_distance_from
distance_from_the
from_the_sun
the_sun_they
sun_they_are
they_are_the
are_the_four
the_four_terrestrials
four_terrestrials_mercury
terrestrials_mercury_venus
mercury_venus_earth
venus_earth_and
earth_and_mars
and_mars_then
mars_then_the
then_the_four
the_four_giant
four_giant_planets
giant_planets_jupiter
planets_jupiter_saturn
jupiter_saturn_uranus
saturn_uranus_and
uranus_and_neptune
and_neptune_six
neptune_six_of
six_of_the
of_the_planets
the_planets_are
planets_are_orbited
are_orbited_by
orbited_by_one
by_one_or
one_or_more
or_more_natural
more_natural_satellites