First Sentence
It moves at a great speed towards the north-east an a nearly horizontal trajectory. Read the first page
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Concordance
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These are the most frequently used words in this book.
abundance
accretion
age
al
allows
asteroids
atmosphere
between
billion
bodies
carbonaceous
case
certain
chemical
chondrites
chondrules
cloud
collision
comet
composition
contain
crater
crust
crystals
different
during
dust
earth
elements
example
fall
few
first
form
formation
formed
found
fragments
gas
grains
however
hundred
ice
iii
ill
impact
inclusions
interstellar
iron
isotope
isotopic
less
light
little
mars
mass
material
meteorites
million
minerals
molecules
moon
nebula
objects
orbit
organic
origin
parent
period
planets
process
radioactive
refractory
result
right
rock
satellites
see
several
shock
shows
silicate
since
size
small
solar
source
space
stars
stone
sun
surface
system
terrestrial
three
thus
time
today
two
years
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