The Transit of Venus...

Unless you've been living under a potted plant for the past month or so, you know that there will be a transit of Venus across the face of the sun next Tuesday evening (in the U.S.).  The next such transit of Venus won't happen until the year 2117 - so this is your last chance (in this lifetime, at least!).  At right is a photo of the last such transit, courtesy of APOD.

With the right equipment (inexpensive and easy to obtain) and some care, you can safely see this yourself.  Or you can watch it online, in real time.

More information about the transit and how to watch it yourself, here, here, and here...