Top Posters
Since Sunday
s
5
g
5
K
5
o
5
g
5
o
4
k
4
s
4
I
4
k
4
j
4
o
4
New Topic  
symbo symbo
wrote...
Posts: 1970
Rep: 2 0
7 years ago
Which of the following astronomers was first to detect the rotation of the Sun by watching sunspot motions?
   A)  Halley, while watching his comet    B)  Copernicus    C)  Galileo    D)  Ptolemy
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 123 times
1 Reply
Replies
Answer verified by a subject expert
papachulopapachulo
wrote...
Top Poster
Posts: 1302
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
Brilliant
wrote...

Yesterday
Smart ... Thanks!
wrote...

2 hours ago
This helped my grade so much Perfect
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  947 People Browsing
Related Images
  
 171
  
 570
  
 516
Your Opinion
Which country would you like to visit for its food?
Votes: 214