What is the ‘Transit of Venus’ TONIGHT ? [VIDEO]

Have you been hearing about 'the transit of Venus' ? It won't happen again till 2117! What is it?

A transit of Venus occurs when Venus passes directly between the sun and earth. This alignment is rare, check out the video for a complete explantation. Click the link at the bottom of the page for the smartphone app, safe ways to watch the transit and more.

(From transitofvenus.org)