1. Using All of Our Tools What the Various Parts of the Spectrum Tell us About Space

2. NRAO/AUI/NSF Radio Waves are NOT sound! They are part of the electromagnetic spectrum.

4. NRAO/AUI/NSF Electromagnetic Waves  traveling, mass-less packet of energy  travels at the speed of light (by definition)  all radiation travels at this speed, regardless of whether is carries a lot of energy or only a little Animation from Nick Strobel’s Astronomy Notes (www.astronomynotes.com)

5. NRAO/AUI/NSF A light wave is a light wave, no matter how long...

6. NRAO/AUI/NSF Different Views of Common Objects

7. NRAO/AUI/NSF Optical and Radio telescopes can be used from the ground! Infrared, X-ray and Gamma ray telescopes must work beyond the ionosphere. The ionosphere filters out many of the waves

8. NRAO/AUI/NSF Radio Telescope Optical Telescope Nowadays, there are more similarities between optical and radio telescopes than ever before.

9. NRAO/AUI/NSF 9 The Visible Sky, Sagittarius Region

10. NRAO/AUI/NSF10 The Radio Sky

11. NRAO/AUI/NSF11

12. Tour of Orion The tour presents five images of Orion. All show the same area of the sky but were made with telescopes working at different wavelengths of light (optical, infrared, and three radio wavelengths).

13. Optical view

14. Dust in the infrared Image created By IRAS

15. Molecular hydrogen Radio telescope

16. Ionized hydrogen

17. Atomic Hydrogen