Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Science-Related Homework Help Physics
New Topic  
symbo symbo
wrote...
Go to Answer
Posts: 1970
Rep: 2 0
7 years ago
The photons that enter our microwave detectors today (and that we interpret as the cosmic microwave background radiation) had their last interaction with matter
A)   at the instant of the Big Bang.   C)   during the era of recombination.
B)   during the inflationary epoch.   D)   at the time of symmetry breaking.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 127 times
1 Reply
Replies
Answer verified by a subject expert
discovererdiscoverer
wrote...
#1
Top Poster
Posts: 1374
Rep: 30 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

symbo Author
wrote...

7 years ago
Good timing, thanks!
DAGINC
wrote...

Yesterday
This helped my grade so much Perfect
erimis
wrote...

2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1274 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 70
  
 620
  
 1400
Your Opinion
Previous poll results: Who will win the 2024 president election?