Share Sally Ride: Chapter 5
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a group of animals which live together
colony
material with loops and hooks that stick together
Velcro
a scientific test
experiment
an object goes around another object in space
orbit
very scary
terrifying
the layer of gases around a planet
atmosphere
to push something with a lot of forse
propel
weak, easily broken
fragile
a force which pulls objects toward each other
gravity
there is no reason for doing something
pointless
