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Physics
The branch of science concerned with the properties of matter and energy and the relationships between them.
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Physics > Astronomy
colliding galaxies
Physics; Astronomy
When two or more galaxies are close enough, their gravity begins to attract each one toward the other. The attraction increases as the galaxies travel even closer together. These ...
compare chart or t-chart
Physics; Astronomy
A graphic organizer used to compare two objects or ideas. The objects are listed as headings at the top of two columns. The characteristics being compared are then listed under ...
constellations
Physics; Astronomy
“Pictures” in the sky that ancient astronomers perceived by imagining lines or relations between stars that appear grouped. Often, mythological heroes or creatures were the ...
edge-on spiral galaxy
Physics; Astronomy
A spiral galaxy viewed from the side so that the disk containing the spiral arms appears to be a thin line of stars and dust crossing and extending beyond the bulge. Stars in the ...
elliptical galaxy
Physics; Astronomy
A galaxy having an elliptical shape. Some elliptical galaxies are nearly spherical, while others are more oblate, resembling footballs. An elliptical galaxy is essentially a big ...
face-on spiral galaxy
Physics; Astronomy
A spiral galaxy viewed from above so that the spiral arm structure is visible.
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