Future visitors to one of the hottest planets (second to Venus) will be treated to a sun that literally changes direction as it crosses Mercury's sky. This video explains how this strange phenomenon can occur. The film was first developed for use on Scientific American magazine's website as part of an interactive package entitled "8 Wonders of the Universe" [ scientificamerican.com/article.cfm?id=8-wonders ].

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…