This is a rare opportunity...
To compare what is visible in the sky with this event and compare it to
what Galileo saw and recorded for comparison.
Might help the growing debate as to whether Galileo should get credit
for discovering Neptune in 1613 as opposed to the usual year of 1846
by some other Europeans.
And in cosmically related news, Pluto's status is being really downplayed
at the latest IAU meeting happening now:
http://philosophyofscienceportal.blogspot.com/2009/08/plutos-status-in-iau-rio-meeting.html