These are the most frequently used words in this book.
0
almost
alpha
always
away
best
beta
between
binoculars
bright
brightest
close
cluster
colour
come
comet
components
constellation
contains
craters
days
degrees
delta
distance
earth
easy
enough
epsilon
eta
even
eye
fainter
far
field
find
first
gamma
globular
great
known
large
leading
less
lies
light
line
little
long
look
low
luminous
magnification
magnitude
major
mare
may
moon
naked
near
nebula
ngc
night
north
northern
now
object
observer
open
orange
pair
part
period
planets
range
rather
red
see
seen
show
sky
small
south
southern
stars
still
sun
telescope
theta
though
times
triangle
two
type
use
variable
view
visible
white
years
zeta