1. Nebulae
neb⋅u⋅la
nɛbyələ [neb-yuh-luh]
noun, plural -lae [li, laɪ]
http://hubblesite.org/gallery/album/nebula/pr2002011b/npp/all/
A cloud of interstellar gas and dust.

2. Types of Nebulae
Diffuse Nebulae
(Star Creation)
Star Destruction
http://hubblesite.org/gallery/album/nebula/pr2005012b/np
p/all/

3. Diffuse Nebulae
Star Creation
Emission Nebulae
Reflection Nebulae
Dark Nebulae
http://hubblesite.org/gallery/album/nebula/pr2006055a/npp/all/

4. Emission Nebulae
M8 The Lagoon Nebula
•Emit Light
•Mostly Hydrogen
•Usually Red
http://upload.wikimedia.org/wikipedia/commons/2/2f/M8HunterWilson.jpg
The Lagoon nebula is about 100 light years across and
contains many bright star-forming clusters.

5. Reflection Nebulae
NGC 1999
•Reflect Light
• Heavy Elements
•Usually Blue
http://hubblesite.org/gallery/album/nebula/pr2000010a/npp/all/
The central star and the nebula have identical spectrums, which tell us
that what we see is truly reflected starlight.

6. Dark Nebulae
The Horsehead Nebula
•Absorb Light
•Visible when
blocking light
from stars or
bright nebulae
http://apod.nasa.gov/apod/ap081126.html
Dark nebulae obscure light because they consist of micrometer-sized
opaque particles

7. M20 The Trifid Nebula
Emission
Nebula
Reflection
Dark Nebula
Nebulae
http://www.caelumobservatory.com/gallery/m20.shtml

8. Nebulae formed
by Star Death or
Destruction
Planetary Nebulae
Supernova Remnants
http://hubblesite.org/gallery/album/nebula/pr2009025f/npp/all/

9. Planetary Nebulae
NGC 6543 Cat’s Eye Nebula
Formed from
medium-sized
stars
First planetary nebula
to be analyzed
spectroscopically
http://hubblesite.org/gallery/album/nebula/pr2005012t/npp/all/

10. Supernova Remnants
M1 The Crab Nebula
Formed from
large, high mass
stars
Occurred in 1054 AD
and was visible in
the daytime for
over two weeks
http://hubblesite.org/gallery/album/nebula/pr2005037a/npp/all/

11. Planetary Nebulae
Supernova Remnants
http://hubblesite.org/gallery/album/nebula/pr2003011a/npp/all/
thrust their gas clouds back into
space where they mix with diffuse
nebulae and are recycled into new
stars and planets
http://hubblesite.org/gallery/album/nebula/supernova_remnant/pr20
03020a/npp/all/

12. Types of Nebulae
diffuse nebulae
dark dusty clouds
planetary nebulae
remnants of exploded stars
http://hubblesite.org/gallery/album/nebula/supernova_remnant/pr2007030c/npp/all/

13. Observing Nebulae
Hubble Space
Telescope (HST)
Mid-sized
Amateur Telescope
http://en.wikipedia.org/wiki/File:HST-SM4.jpeg

14. The Ring Nebula – M57
12.5” Dobsonian
http://hubblesite.org/gallery/album/nebula/planetary/pr1999001a/npp/all/
Hubble Space Telescope

15. The Eagle Nebula – M16
Hubble Space Telescope
(Just one part of the nebula)
12.5” Dobsonian
http://hubblesite.org/gallery/album/nebula/emission/pr2005012e/web/npp/all/

16. Diffuse Nebulae
M20 M8
The Trifid Nebula The Lagoon Nebula

17. Diffuse Nebulae
M42 M17
The Orion Nebula The Swan Nebula

18. Planetary Nebulae
NGC 7923 M27
The Helix Nebula The Dumbell Nebula

19. Supernova Remnant
NGC 6995 M1
West Veil Nebula The Crab Nebula

20. Observing Nebulae

21. Nebulae
http://hubblesite.org/gallery/album/nebula/supernova_remnant/pr2007030c/npp/all/
Pillars of Creation

22. Credits
Hubble images can be found here:
http://hubblesite.org/gallery/album/nebula/npp/all/
Image of M8 the Lagoon nebula can be found here courtesy, of Hunter Wilson:
http://upload.wikimedia.org/wikipedia/commons/2/2f/M8HunterWilson.jpg
Image of M20, the Trifid nebula can be found here, courtesy of Adam Block:
http://www.caelumobservatory.com/gallery/m20.shtml
All Sketches can be found here, courtesy of Kiminori Ikebe:
http://www.jupiter-jp.net/ike/English/indexeng.htm