During the transit the planet Mercury will move across the face of the Sun as seen from Earth. You can't see this event with the naked eye, indeed it is very dangerous to look at the Sun directly with the naked eye or any optical aid. We'll have the equipment on hand to show you the event safely, and explain what's going on.
|Transit of Venus 2004|
You can find more information about the transit on the Society for Popular Astronomy website and more information on safe solar observing from the BBC Sky at Night Magazine.
Hope to see you there,