@iZombie,
Probably because its an average distance. Distance between Earth and Sun is always 1 AU, but distance between Earth and Venus varies between about .3 AU and 1.7 AU depending on relative orbital position. If Venus spends more time on the “far” side of the Sun then the average would come to more that 1 AU.
Actually we can go a bit further and use the law of cosines to show that anytime the Earth-Sun-Venus angle is greater the 69.5 degrees, then the distance between Earth and Venus will be greater than 1 AU. So Venus does not even need to be on the “far side” of the sun for the distance to be greater than the Sun.
Thank you! I just spent the last couple hours reading as much a could on wikipedia regarding this. Your explanation was far easier to understand and more to the point.
Now I understand EVERYTHING!
Quick question. Why is the earth closer to the Sun than to Venus?
@iZombie,
Probably because its an average distance. Distance between Earth and Sun is always 1 AU, but distance between Earth and Venus varies between about .3 AU and 1.7 AU depending on relative orbital position. If Venus spends more time on the “far” side of the Sun then the average would come to more that 1 AU.
Actually we can go a bit further and use the law of cosines to show that anytime the Earth-Sun-Venus angle is greater the 69.5 degrees, then the distance between Earth and Venus will be greater than 1 AU. So Venus does not even need to be on the “far side” of the sun for the distance to be greater than the Sun.
Thank you! I just spent the last couple hours reading as much a could on wikipedia regarding this. Your explanation was far easier to understand and more to the point.
I think at the time the map was made, Venus was, in fact, farther from us than the Sun was. It’s what happens sometimes when things orbit 😛
Oops… shouldn’t reply to old comments unless I refresh the page for new comments…
@iZombie,
No problem, it was an interesting, non-obvious question.