Level 14
Level 15

Lesson 9 Part 2


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operate
to control
mission
a special tast or job
efficient
not wasteful, no mistakes
faraway
something far in the distance
exploration
the noun form of explore
navigation
operating boats and planes
microgravity
little to no gravity
scientific
the adjective form of science
fuel
burned to make energy
heat-resistant
resistant to heat
automatic
can do something by itself
operation
the noun form of operate
gravity
the force that keeps us on the ground
rendezvous
a planned meeting
self-control
the ability to control yourself
accelerate
to speed up, gain speed
planetary
the adjective form of planet
journal
a magazine or book related to one topic
descent
the nound form of descend
launch
to make a rocket go up to space
target
aim or goal
voyage
a long journey, esp. by sea or in space
touchdown
to land