Top Posters
Since Sunday
p
4
h
4
c
4
d
3
3
c
3
t
3
u
3
A
3
B
3
j
3
s
3
New Topic  
Tsync Tsync
wrote...
Posts: 3450
Rep: 8 0
8 years ago
The supernova that formed M-1, the Crab Nebula, was observed in:
A) 1054 AD by Chinese and Middle Eastern astronomers.
B) 1604 AD by Johannes Kepler.
C) about 9,000 BC by all our ancestors.
D) 1572 AD by Tycho Brahe.
E) 1006 by observers in the southern hemisphere.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 189 times
3 Replies
Minoring in physics
Replies
Answer verified by a subject expert
RatatouilleRatatouille
wrote...
Top Poster
Posts: 3710
8 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

Tsync Author
wrote...
8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
wrote...
8 years ago
Slight Smile
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1282 People Browsing
Related Images
  
 256
  
 506
  
 71
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 820