Top Posters
Since Sunday
w
5
a
3
j
2
a
2
t
2
u
2
r
2
j
2
j
2
l
2
d
2
y
2
Home Q & A Board Science-Related Homework Help Physics
New Topic  
staedtler staedtler
wrote...
Go to Answer
Posts: 2716
Rep: 0 0
7 years ago
A reflection nebula is made visible by
A)   thermal energy emitted as a continuous spectrum by the very hot gas, much like that emitted by a hot body on the Earth.
B)   light from embedded stars reflected over a wide range of wavelengths toward the Earth by crystals of water, methane, and ammonia ices.
C)   emission lines from hydrogen, which itself has been ionized by UV light from embedded stars.
D)   blue light preferentially scattered by dust grains.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 93 times
2 Replies
Replies
Answer verified by a subject expert
papachulopapachulo
wrote...
#1
Top Poster
Posts: 1302
Rep: 29 0
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

staedtler Author
wrote...
#2
7 years ago
Person Raising Both Hands in Celebration

Correct Slight Smile
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1612 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 261
  
 1197
  
 183
Your Opinion
Who's your favorite biologist?
Votes: 608
Previous poll results: How often do you eat-out per week?