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Unit 7

Astronomy

QuestionAnswer
National Aeronautics and Space Administration; an organization in the United States that directs space travel and research NASA
the stuff everything in the universe is made of; anything that takes up space matter
the most common gas in the universe, which is lighter than air and easily catches fire hydrogen
to send a rocket into outer space launch
the curved path something in space takes around another object in space. orbit
a suggested explanation for why something happens theory
a manned spacecraft used for exploration space shuttle
the sun, other bodies like asteroids and meteors, and the planets that orbit the sun solar system
not carrying people unmanned
an object shaped like a ball sphere
a tool used to explore something, such as outer space probe
a frozen ball of dust and ice that travels through outer space comet
a very large cluster of billions of stars, dust, and gas held together by gravity and separated from other star systems by a large amount of space galaxy
an imaginary straight line through the middle of an object, around which that object spins axis
a space rock, smaller than a planet, that orbits the sun asteroid
a person who travels into outer space astronaut
an invisible, protective blanket of air around Earth and other heavenly bodies atmosphere
a natural or man-made object that orbits a planet or smaller object satelite
to turn about an axis or a center rotate
Created by: jlwangler11
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