× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
L
4
d
4
3
k
3
k
3
j
3
k
3
b
3
f
3
b
3
d
3
h
3
New Topic  
barry barry
wrote...
Posts: 11630
10 years ago
During the eighteenth and nineteenth centuries, attempts to precisely measure the astronomical unit relied largely on rare:
A) total solar eclipses.
B) transits of the inferior planets across the Sun.
C) passages of comets close to the Earth.
D) maximum elongations of Venus.
E) oppositions of Mars.
Read 2159 times
2 Replies

Related Topics

Replies
wrote...
10 years ago
Answer:  B
Would you know my name, if I saw you in heaven?

Eric Clapton
barry Author
wrote...
10 years ago
Thanks man, perfect Slight Smile
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1048 People Browsing
Related Images
  
 373
  
 1682
  
 324