It was a long ____ to Europe
flight
Past tense of 'to study'
Studied
What's Earth doing?
spinning
The planets o _ _ _ _ _ the Sun
orbits
What are these?
Planets
All these objects are circles, so they're c _ _ _ _ _ _ _
circular
Hoi An, Da Nang and Hue are in c _ _ _ _ _ _ Vietnam
central
It was a dangerous science ________
Experiment
What's this?
Astronaut
What are these?
Satellites
B _ _ _ _ OFF!
BLAST
This is a s _ _ _ _ _
spiral
What's this?
Shuttle