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Astronomy Terms Quiz Stats

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Score 0/16 Timer 05:00
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Description Term % Correct
A layer of gas that surrounds a planet or moonAtmosphere
89%
85.4%
An object that orbits a planetMoon
82.5%
The nearest large spiral galaxy to the Milky WayAndromeda Galaxy
82.3%
A huge collection of anywhere from a few hundred million to more than a trillion stars, all bound together by gravityGalaxy
78.3%
A relatively small, icy object that orbits a starComet
77%
Name sometimes given to energy that could be causing the expansion of the universe to accelerateDark Energy
67%
An object orbiting another objectSatellite
60.1%
Description Term % Correct
The process in which a larger nucleus splits into two or more smaller particlesNuclear fission
59.3%
The speed necessary for an object to completely escape the gravity of a large bodyEscape Velocity
59%
A gas consisting of ions and electronsPlasma
36.8%
A forming star that has not yet reached the point where sustained fusion can occur in its coreProtostar
36.7%
The spherical region surrounding the disk of a spiral galaxyHalo
28.9%
The total power output of an objectLuminosity
24.3%
Direction around the horizon from due north, measured clockwise in degreesAzimuth
20.9%
Particles, including protons and neutrons, that are made from three quarksBaryons
19%

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