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Nowak- Mapping Stars

Ancient cultures organized the sky by linking stars together in patterns
Constellations sections of the sky that contain recognizable star patterns
Ancient Greeks saw a hunter, but the Japanese saw a drum
The sky is divided into how many constellations? 88
Why do modern astronomers use the same names for the constellations? to make communication easier
The constellations that are visible in the sky are the same or different in the spring or the fall? different
zenith imaginary point directly over the head of the observer
celestial equator imaginary extension of Earth's equator into space
horizon line where the earth and sky meet
altitude angle between an object and the horizon
right ascension measure of how far east an object is from where the sun appears on the vernal equinox
vernal equinox where the sun appears on the first day of spring
declination position of a star in degrees north or south of the celestial equator
always 90 degrees from zenith horizon
circumpolar stars stars that can be seen at all times of year and all times of night
Copernicus thought the stars must be very far away because they never shifted their relative positions
red shift as a light source moves away, the light source looks redder
light year the distance that light travels in one year
One light-year is about ____ trillion kilometers 9.46
Are most stars smaller or larger than Earth? larger
The stars that you see depend on your latitude, the time of the year, and the time of night
Created by: seagullq