1. WHAT ASTRONOMERS LEARN ABOUT THE ELECTROMAGNETIC SPECTRUM

2. RADIO WAVES

3. HOW DO RADIO WAVES HELP ASTRONOMERS Astronomers learn about a stars composition, structure and motion

4. MICROWAVES

5. HOW DO ASTRONOMERS USE MICROWAVES ASTRONOMERS PICK UP THE COSMIC MICROWAVE BACKGROUND THAT WAS LEFT OVER FROM THE BIG BANG

6. VISIBLE LIGHT

7. INFARED WAVES

8. HOW DO ASTRONOMERS LEARN FROM INFARED WAVES THEY LEARN INFORMATION ABOUT THE TEMPERATURE OF THE STARS

9. HOW DO SCIENTISTS USE VISIBLE LIGHT TO STUDY STARS – The only wave we can see. We can study about the red shift

10. ULTRAVIOLET RAYS

11. HOW DO ASTRONOMERS USE ULTRAVIOLET RAYS THE WAVES ARE USED TO STUDY DISTANT GALAXIES BY COMPARING UV LIGHT TO NEARBY GALAXIES

12. X-RAYS copyright

13. HOW DO ASTRONOMERS USE X-RAYS HIGH ENERGY WAVES GAIN INFORMATION ABOUT HOW UNIVERSE BEGAN STUDY MATTER AND BLACK HOLES

14. GAMMA RAYS

15. HOW DO ASTRONOMERS USE GAMMA RAYS POWERFUL WAVE MOST ENERGY STUDY SOLAR FLARES,SUPERNOVAS, BLACK HOLES AND OTHER GALAXIES