1. Chapter 28 Electromagnetic SpectrumElectromagnetic Spectrum The range of light from short to long wavelengths

2. The Doppler EffectThe Doppler Effect Whether stars are moving toward or away from Earth

3. RedshiftRedshiftStar is slowly moving away from Earth

4. BlueshiftBlueshiftMovement of a star toward earth

5. Star Characteristics ConstellationsConstellationsA group of stars that seem to form a pattern in the night sky

6. Big Dipper

7. Little Dipper

8. Circumpolar constellationsCircumpolar constellations Revolve around the North Pole so that they can be seen all year long

9. MagnitudeMagnitude Apparent magnitudeApparent magnitude Absolute MagnitudeAbsolute Magnitude The brightness of a star How bright a star appears to be How bright a star really is (also called Luminosity)

10. Distance in space Astronomical UnitAstronomical Unit 150 million kilometers, the average distance between the earth and the sun

11. Light-yearLight-yearMeasure of distance in space 9.5 trillion kilometers

12. Color of Stars Cool starsCool stars Warm starsWarm stars Red Bluish-white

15. GalaxyGalaxyA system containing millions to billions of stars

16. Milky WayMilky Wayspiral